Fill in the blanks in is the ability to do work or produce heat. He observed that when alpha particles are passed through the, A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. H s What element has the configuration 1s22s22p63s23p64s23d104p65s1? IE5, A: From the given electronic configuration, the element can be identified by adding all the, A: For the given electronic configurations , the correct element has to be identified and symbol of the. Mass of first isotope = 60 amu (a) Na or K (b) Cs or Cs+ (c) Rb+ or Kr (d) K or Ca (e) Cl or Ar, 6.61 Using only a periodic table as a guide, arrange each of the following series of atoms in order of increasing size. identify the following atoms. a 1s22s12p6 b 1s22s22p8 c 1s22s22p63s23p63d7 d 1s22s32p63s13d9, Answer the following questions based on the given electron configurations and identify the elements. 0000008160 00000 n Answered: The element | bartleby Arrange these atoms in order of decreasing first ionization energy:[Ne]3s23p5; [Ar]4s23d104p3; [Ar]4s23d104p5, Using data from the text, determine the following values (justify your answer): a. the electron affinity of Mg2+ b. the ionization energy of CI. Distinguish between the first ionization energy and the second ionization energy. selenium What is th condensed electronic configuration for selenium? . 1. The contributions of J. J. Thomson and Ernest Rutherford led the way to todays understanding of the structure of the atom. %PDF-1.3 % Identify the ion with a net charge of +4 and a ground-state electron configuration of [Xe] 4f145d4 OS4+ 1. The number of electron in an electronically neutral atom is equal to the number of proton. a. Kr 5s24d6 b. Ne 3s23p4 c. Xe 6s24f145d7 d. Kr 5s24d105p3, Determine the element to below-abbreviated electron configuration refers. what element is 1s22s22p63s23p64s23d104p65s1 - Brainly.com What element is 1s22s22p63s23p64s23d104p65s1? - Answers The element 1s22s22p63s23p64s23d104p65s2 is. USE THE PERIODIC TABLE IN YOUR BOOK.) The energy will be liberated. What mass (grams) of sodium sulfate would be formed by the complete reaction of 120.0 grams of sodium hydroxide? TI - 5 marks 1s22s22p@3s23p4s24d104p5 1s22s2p3s33d5 [Ra] 7s25 [Kr] 5s4d105p5 [Xe] 6s24 10 5. Number of protons = 38 a. N, O, F b. Al, Si, P, Answer the following questions based on the given electron configurations and identify the elements. Answered: 1s22s22p63s23p64s23d104p6 is the | bartleby The number of electrons in any ion of an element is. 6.62 Define the term ionization energy. a. (a) Write the electron configuration of each of these elements using an orbital box diagram and noble gas notation. Advertisement 1. Find parametric equations for the line that contains (4,1,7)(-4,1,7)(4,1,7) and is perpendicular to the plane 7x+2y+3z=1-7 x+2 y+3 z=17x+2y+3z=1. Solved Which element has the electron configuration | Chegg.com Write the one or two letter symbol for the element. A: Given that - Neutron, is. If your periodic table doesn't agree with this, your answers for elements near the f-orbitals may be slightly different. Identify the element denoted by the electron configuration 1s22s22p63s23p6. If your periodic table doesn't agree with this, your answers for elements near the f-orbitals may be slightly different. a. The element with the electron configuration 1s^22s^22p^2 is .. . The atomic number is 33. Determine what elements are denoted by the following electron - Brainly Abundance of second isotope, A: f) Mg is a metal and can easily lose two electrons. Identify the following elements. 0000003446 00000 n Arrange these atoms in order of increasing size:[Kr]5s24d105p6; [Kr]5s24d105p1;[Kr]5s24d105p3 b. The physical and chemical properties of metals and nonmetals differ from each other. The ionization energy of gold is 890.1 kJ/mol. What is the element? See answer Advertisement OlaMacgregor Explanation: As the given electronic configuration is . of neutron=5 A magnet mode of on alloy containing the elements Nd, Fe, and B. A: Match the following given elements to correct electron configuration as follows in step 2: Answer the following questions about first ionization energies. 0000005447 00000 n Identify the ion with a net charge of +4 and a ground-state electron configuration of [Xe] 4f145d4. 1. IE value (kJ/mol) (b) Are these elements paramagnetic or diamagnetic? Simply add up these numbers, which will give you 14. Answered: Determine what elements are denoted by | bartleby What element has the electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1? Which element has the electron configuration 1s22s22p63s23p64s23d104p?? (a) Generally ionization energies increase on proceeding across a period, but this is not true for magnesium (738 kJ/mol) and aluminium (578 kJ/mol). The number of proton is the atomic number of the element. the element is an Atom of that element. This is because the number of A: The given IE value(s) : What is the expected electron configuration for the element Zr? A. composite What do bases yield when dissolved in water? what are the 3 odd numbers just before 200 003? This problem has been solved! A: The ionization energy with one of the given electron configurations has to be match, A: Isoelectronic species are known as atoms or ions that have the same number of electrons. \boldsymbol{V} \boldsymbol{R} & \begin{array}{c} Which element is isoelectronic with Cd2+? The electron configuration #1s^2 2s^2 2p^6 3s^2 3p^2# is the element Silicon. Assume an atom is 'X', A: Radioactive elements:When an element is subjected to spontaneous degeneration of its nucleus, A: Write charge and mass of electron, proton and neutron ---, A: The periodic table (the modern one) is framed based on the modern periodic law which state that the, A: A neutron is a particle present in the nucleus of the atom. 0000008139 00000 n Choose the electron configurations that are possible from among the following. We now know that this is not always true. Identify the element represented by this electron configuration. Which element has the largest electron affinity? A: The given element is Sulfur. Arrange these atoms in order of increasing size:[Kr]5s24d105p6; [Kr]5s24d105p1;[Kr]5s24d105p3 b. Determine the element to which the given electronic configuration belongs.1s2 2s2 2p6 3s1, Identify the element and the part of the periodic table in which the element with the given configuration is found. A: Since you are asked for multiple sub-parts, we are entitled to solve first three only. The number of electrons depends on the specific element. 1s22s22p63s23p64s23d1. b. How many elements are located in group VIIB (7) of the periodic table? 0000010835 00000 n 4s^2 3d^10 symbol: Determine the identity of the element with the following electron configuration. Nitrogen is, A: The electronic configuration of an element shows the arrangement of electrons in orbitals of an, A: The element with atomic number 32 is, Germanium(Ge) with electronic configuration [Ar] 4s2, 3d10,, A: Energy required to remove electron from outermost shell of an isolated gaseous atom is known as, A: The distribution of electrons in an atomic orbital is well described by writing the electronic, A: Depending on the position of the last electron in the valance cell orbitals the position of the. The '3' informs us that the element is in the 3rd Energy Level or row of the periodic table.The 'p' tells us that the element is found in the p-block which are all of the Groups to the right of the transition . A: Given \end{array} & \begin{array}{c} Atomic mass of element = 119 of Polonium = 84 Which of the following is one of the specified treatment technologies Learn about periodic table orbital blocks and the s-block in the periodic table that contains the alkali and alkaline earth metals. How many minutes does it take to drive 23 miles? For the question given above, the atomic number of iodine is 53 and the distribution of the 53 electrons into different orbitals is the one given in the question. This shows that there are in total 35 electrons and 7 valence electrons. Atoms are very important basic building blocks of an element which consists of, A: Rutherfords experiment indicated that matter was not asuniform as it appears. Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer, Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom, Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser, Determine what elements are denoted by the following electron configurations: 8) 1s22s2 2p6 3s23p4 ____________________ 9) 1s22s22p63s23p64s23d104p65s1 ____________________ 10) [Kr] 5s24d105p3 ____________________ 11) [Ne]3s1 Sodium ____________________. How many unpaired electrons are there in the ground state of this atom? The ground-state electron configuration for As3, Which ion is isoelectronic with 1s22s22p63s23p63d8, 1. r What is the electron configuration for a sodium ion? & y_1^{\prime}=3 y_2 \\ This gain or loss of energy is due to the phenomena that occur at atomic level. This causes them to bind together in special ways to form . {/eq}. [Ne]3s^23p^5 b. Ne 3s23p2, Identify the group of the periodic table in which the element with the following electron configuration is found. An unknown liquid has a heat of vaporization of 32.45 kJ/mole. Arrange these atoms in order of decreasing first ionization energy: [Ne]3s23p5; [Ar]4s23d104p3; [Ar]4s23d104p5. a. Therefore, the element is Arsenic. (\mathbf{r p m}) of, A: Answer: 3s^2 3p^1, For the following electron configuration, determine the possible element it may represent: Ar 4s2, What element is represented by the following ground-state electron configuration? To. of Iodine = 53 Expert Answer. All rights reserved. The electron configuration 1s22s22p63s23p64s23d104p3 represents which element? 1. 1. 1s^22s^22p^63s^23p^64s^23d^{10}4p^65s^24d^{10}5p^2, Which element does the following electron configuration correspond to? The number of electron in an electronically neutral atom is equal to the number of proton. (Kr)4d104f145s25p65d105f146s26p67s2. The electron configuration #1s^2 2s^2 2p^6 3s^2 3p^2# is the element Silicon.. use Juns observations (from part 1) to describe the properties of all three substances (the pipe, the fe 1. A: The atomic number of carbon is 6. Design a wormgear set for the below specifications to produce the desired velocity ratio when transmitting the given torque at the output What element is represented by this electron ground state configuration: (Kr) 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d2 7s2? A chemical element is a species of atoms, including the pure substance made entirely of that species, that have a specific number of protons in their nuclei. a. Te b. Tc c. Br d. I e. At. A: The outermost shell is known as Valence shell and the electrons found in it are valence electrons. r Questions 1113, you will need to consider ionizations beyond the first ionization energy. In the given, the last configuration is {eq}\rm 5s^2{/eq}. Neon is a chemical element; an element don't contain another element. The electronic configuration is represented as follows; 1s2s2p3s3p4s3d4p. See all questions in Electron Configuration. \hline 7.5 & 984 & 80 (DO NOT USE THE PERIODIC TABLE HANDOUT I GAVE YOU. 2s^2 2p^4, The atom of which element would have the ground-state electron configuration of [[Kr] 5s2 4d10 5p5? Determine the identity of the element with the following electron configuration. Solved Enter the name of the element for the corresponding - Chegg 1s22s22p63s23p64s23d104p65s24d105p5 what is the name of the element we have been given electronic, A: Ionization energy is an energy which is required to remove an electron from a neutral isolated, A: Since the sum of electrons in electron configuration will give atomic number of element sodium ________________________________________________ 2) iron ________________________________________________ 3) bromine ________________________________________________ 4) barium ________________________________________________ 5) neptunium ________________________________________________ In the space below, write the abbreviated electron configurations of the following elements: 6) cobalt ________________________________________________ 7) silver ________________________________________________ 8) tellurium ________________________________________________ 9) radium ________________________________________________ 10) lawrencium ________________________________________________ Determine what elements are denoted by the following electron configurations: 1s22s22p63s23p4 ____________________ 1s22s22p63s23p64s23d104p65s1 ____________________ [Kr] 5s24d105p3 ____________________ [Xe] 6s24f145d6 ____________________ [Rn] 7s25f11 ____________________ Determine which of the following electron configurations are not valid: 1s22s22p63s23p64s24d104p5 ____________________ 1s22s22p63s33d5 ____________________ [Ra] 5f8 ____________________ [Kr] 5s24d105p5 ____________________ [Xe] ____________________ Electron Configurations - Solutions Note: The electron configurations in this worksheet assume that lanthanum (La) is the first element in the 4f block and that actinium (Ac) is the first element in the 5f block. h: CJ$ Amplify) as evidence to support your answer.When a chemical reaction does not occur, what happens to the atoms of the two substances? I donty know how to do this what are they, I need an answer, quick! Explain briefly why each of the following is not a possible set of quantum numbers for an electron in an atom. (b) Explain why the ionization energy of phosphorus (1012 kJ/mol) is greater than that of sulphur (1000 kJ/mol) when the general trend in ionization energies in a period would predict the opposite. Which of the following cations needs a Roman numeral in naming? 0000006391 00000 n The first four ionization energies for the elements X and Y are shown below. 0000002437 00000 n A: An atom of a element has the electron configuration of 1s22s22p5 1. . The element with atomic number of 33 is Arsenic. Ar4s^2 3d^3 a) Nb b) V c) Sc d) Ca, Identify the atom with the following ground-state electron configuration for its valence shell. The supercripts (2, 2, 6, 2 and 2) are the number of electrons in each orbital. 0000003425 00000 n Explain why the others are not. Atomic number of sulfur is 16. Atomic number of C=6 Describe the structure of the atom as explained by Rutherford. How can virtual classrooms help students become more independent and self-motivated learners? So, It has 36 +2+7 Electron configuration of Magnesium: 1s22s22p63s23p64s23d104p5 Which element is this? - Brainly.com 0000042977 00000 n 0000007203 00000 n Element 9: Fluorine (Ar)4s^23d^{10}4p^3, Which element is represented by the given electron configuration? 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4, Which element does the following electron configuration correspond to? 18 0 obj << /Linearized 1 /O 21 /H [ 1411 238 ] /L 77771 /E 73291 /N 2 /T 77293 >> endobj xref 18 38 0000000016 00000 n \end{array} \\ Determine what elements are denoted by the following electron configurations: c.) [Kr] 5s24d105p3. Identify the atom whose electron configuration is [Ar]4s^23d^6. of Astatine = 85 You can specify conditions of storing and accessing cookies in your browser. To help identify the element given the configuration, we can simply look at the last configuration of that element. 0000005947 00000 n The 'p' tells us that the element is found in the p-block which are all of the Groups to the right of the transition metals, columns 13-18. 1. Chem Exam 3 Flashcards | Quizlet A: Solution : Here are the main differences between ionic, covalent and metallic : A: The question is based on the concept of electronic configuration. Compare the first ionization energy of helium to its second ionization energy, remembering that both electrons come from the 1s orbital. What are some examples of electron configurations? Explain this observation. Because F is the member of 17 group in the, A: Given, The correct electron configuration for Cr3+ is. Scientists J. J. Thomson and William Thomson (Lord Kelvin) made numerous contributions to our understanding of the atoms structure. Solved 2. Determine what elements are denoted by the - Chegg 0000005242 00000 n How do electron configurations in the same group compare? where X = element He 2s22p2, Determine the element that represents the depicted electron configuration. IE1 For a, b, c, and d, identify the group of elements that corresponds to each of the following generalized electron configurations and indicate the number of unpaired electrons for each: a - [noble gas] ns^2np^5 b What is the name given to the group of elements all of which have the electron configuration ns2np5? What is the element based on its electron configuration (shown below)? Determine the maximum number of electrons that can have each of the following designations: 2f, 2dxy, 3p, 5dyz, and 4p. & y_2^{\prime}=12 y_1 \\ Explain. Which elements have the following electron configurations? What is the proper formula for mercury (I) phosphide? (7th grade science) [Ar]4s^1. n*neVc1zF1|:?%g+jqfl[//I_r+ 7S)7bXO$n g* How do the electron configurations of transition metals differ from those of other elements? What is the element with an electron configuration of 1s22s22p63s23p64s23d6? Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen, Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser, Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom, The element 1s22s22p63s23p64s23d104p65s2 is a. a halogen b. an alkali metal c. an alkaline earth metal d. a noble gas. 48. Solved a) 12. Determine what elements are denoted by the - Chegg A: A question based on electronic configuration, which is to be accomplished. Arrange these atoms in order of increasing size: [Kr]5s24d105p6; [Kr]5s24d105p1; [Kr]5s24d105p3 b. Which element has the least metallic character? Which of the following is the sulfite ion? Ne 3s23p6, Which element has the following electron configuration? so explain completely. N 1. They can be identified by their particular atomic number. And, since it belongs to group 17 so it has 7 valence electrons. IE2 The superscript '2' tells us that the element is found in the 2nd column of the p-block Group 14. 1s22s22p63s23p64s23d104p65s2, Identify the element represented by the following electron configuration. IE3 A: We would use the given plot to answer about the trends . \text { Torque } \\ This chemical element is rubidium. 1. A: A chemical equation in which the electrolytes of aqueous solution are represented as dissociated, A: Rutherford alpha particle experiment. 11575 Z}RAQNc1."yR?e! a. Identify the element and write its ground-state condensed electron configuration: . What element is 1s22s22p63s23p64s23d104p65s24d3? [Kr] 5s24d'5p3 b) c) d) [Xe] 6s4f45d6. Identify the element with the following electron configuration and give the symbols of the other elements in its group. What were their contributions? Previous question Next question. Solution a) Sulphur b) . h: CJ h: 6 0000059795 00000 n A: Gold Foil Experiment helped to determine the arrangement of particles in the atom. A: Option A) Rb > Mg > B > N > F is correct. {jl35'P_ endstream endobj 32 0 obj 401 endobj 33 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 121 /Widths [ 278 0 0 0 0 0 0 0 0 333 0 0 0 0 0 0 556 556 556 556 556 556 556 556 556 556 278 0 0 0 0 0 0 0 0 0 722 0 0 0 0 0 0 667 0 0 0 0 0 0 722 0 0 0 0 0 667 0 0 278 0 278 0 556 0 556 556 500 556 556 278 556 556 222 0 0 222 833 556 556 556 0 333 500 278 556 500 722 0 500 ] /Encoding /WinAnsiEncoding /BaseFont /BGCNIM+Arial /FontDescriptor 34 0 R >> endobj 34 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 32 /FontBBox [ -665 -325 2028 1037 ] /FontName /BGCNIM+Arial /ItalicAngle 0 /StemV 0 /FontFile2 51 0 R >> endobj 35 0 obj << /Filter /FlateDecode /Length 32 0 R >> stream B. silver Therefore, the electronic configuration of carbon is, A: The atom with electronic configuration 1s22s22p6 is Neon (Ne, atomic number 10), A: Atomic No. Find a real general solution of the following systems. 1. & & & & & : : : 8 r 4 $ : 2 $ j + & + & & @ R & & r ] T @P7 V 0 & $ + + : ELECTRON CONFIGURATION Extra Practice 6Ei In the space below, write the unabbreviated electron configurations of the following elements. Solution: Electronic configuration is, A: For the given electronic configuration, the corresponding element and symbol of the element has to, A: For finding out the unpaired electrons we have to write the electronic configuration and then we. noble gases Group 17 elements, the halogens, are the most reactive of the nonmetals because they _____. The existence of isotopes violates one of the original ideas of Daltons atomic theory. {/'2R|;kwj!XO|C"[6Oa(IQANgSD endstream endobj 55 0 obj 126 endobj 21 0 obj << /Type /Page /Parent 7 0 R /Resources 22 0 R /Contents [ 31 0 R 35 0 R 37 0 R 39 0 R 41 0 R 43 0 R 45 0 R 53 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 22 0 obj << /ProcSet [ /PDF /Text ] /Font << /TT2 23 0 R /TT4 24 0 R /TT6 29 0 R /TT8 33 0 R >> /ExtGState << /GS1 49 0 R >> /ColorSpace << /Cs6 27 0 R >> >> endobj 23 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 119 /Widths [ 278 333 0 0 0 0 0 0 0 0 0 0 0 0 278 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 611 0 0 0 0 0 0 0 0 0 0 0 0 0 0 722 0 0 0 0 0 0 0 667 0 0 0 0 0 0 0 0 0 0 556 0 556 611 556 333 0 611 278 0 556 278 889 0 611 611 0 389 556 333 0 0 778 ] /Encoding /WinAnsiEncoding /BaseFont /BGCKMK+Arial,BoldItalic /FontDescriptor 26 0 R >> endobj 24 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 148 /Widths [ 278 0 0 0 0 0 0 0 333 333 0 0 0 333 0 0 556 556 556 556 556 556 556 556 0 556 0 0 0 0 0 0 0 722 0 722 0 667 0 0 0 0 0 722 0 0 0 0 667 0 722 667 0 0 0 944 0 0 0 333 0 333 0 0 0 556 611 556 611 556 333 611 611 278 0 556 278 889 611 611 611 0 389 556 333 611 556 778 0 556 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 278 500 500 ] /Encoding /WinAnsiEncoding /BaseFont /BGCMCL+Arial,Bold /FontDescriptor 25 0 R >> endobj 25 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 32 /FontBBox [ -628 -376 2034 1048 ] /FontName /BGCMCL+Arial,Bold /ItalicAngle 0 /StemV 133 /FontFile2 50 0 R >> endobj 26 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 96 /FontBBox [ -560 -376 1157 1031 ] /FontName /BGCKMK+Arial,BoldItalic /ItalicAngle -15 /StemV 133 /FontFile2 48 0 R >> endobj 27 0 obj [ /ICCBased 47 0 R ] endobj 28 0 obj 548 endobj 29 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 146 /Widths [ 278 0 0 0 0 0 0 0 333 333 0 0 278 333 278 0 0 0 0 0 556 556 0 0 0 0 278 0 0 0 0 0 0 667 0 0 0 0 0 0 0 278 0 0 556 0 722 0 0 0 0 0 611 0 0 0 0 0 0 0 0 0 0 0 0 556 556 500 556 556 278 556 556 222 0 500 222 833 556 556 556 0 333 500 278 556 500 722 0 500 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 222 ] /Encoding /WinAnsiEncoding /BaseFont /BGCMNN+Arial,Italic /FontDescriptor 30 0 R >> endobj 30 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 96 /FontBBox [ -517 -325 1082 1025 ] /FontName /BGCMNN+Arial,Italic /ItalicAngle -15 /StemV 0 /FontFile2 52 0 R >> endobj 31 0 obj << /Filter /FlateDecode /Length 28 0 R >> stream + , g h ! " Explain why the others are impossible. 1) sodium1s22s22p63s1 2) iron 1s22s22p63s23p64s23d6 3) bromine 1s22s22p63s23p64s23d104p5 4) barium 1s22s22p63s23p64s23d104p65s24d105p66s2 5) neptunium 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s25f5 6) cobalt[Ar] 4s23d7 What is the proper name for an aquesous solution with HBr? [Ar]4s^23d^104p^5, Determine the element to which of the below-abbreviated electron configuration refers. What element is 1s22s22p63s23p64s23d104p65s24d3? - Answers What is the electron configuration of copper? Are the numbers of these atoms increasing or decreasing? Identify the valence electrons and the orbitals in which element Cl resides. 0000072757 00000 n For the following electron configuration, determine the possible element it may represent: Ne 3s2 3p2. The total number of electrons in neutral Ba = 56 So, the element with the atomic number of 14 is Silicon! Which element has the ground-state electron configuration Kr5s^2 4d^{10} 5p^4? 0000007722 00000 n Electron Configuration Flashcards | Quizlet What shows the distinct arrangement of atoms in a molecule? Ne 3s2, Identify the group of the periodic table in which the element with the following electron configuration is found. ===== SULFUR (S) ===== RUBIDIUM (Rb) ===== Noble Gases are the most stable group of elements in the Periodic Table because of maximum number of valence . Identify the specific element that corresponds to the following electron configuration.
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