Question

please answer all of the following questions. no work needs to be shown.

mHg and-1 6) Identify the isoelectronic elements. A) Zn2+, Co2+, Cu2+, C:2+, Cd2+ B) Cl-, F-, Br,F, At C) Ne, Ar, Kr, Xe, He D) P3-, s2-, C1-, Kt, Ca2 E) N3-, S2-, Brr, Cst, Sr2+ 7) Which reaction below represents the electron affinity of S? A) S (g) + e B) S(g) ) S(g)+e S(g) D) S2-(8) S(g) + e E) S (g) S(g)+e 82 (g) S(g)+e 8) Give the ground state electron configuration for Sr. A) [Kr]525d105p2 B) [Kr]5s2 C) [Kr]5s24d10 D) [Kr]5s24d105p2 E) [Kr15s24d2 A) it is possible for two electrons in the same atom to have identical values for all four quantum numbers. B) Two electrons in the same orbital can have the same spin. C) An orbital that penetrates into the region occupied by core electrons is less shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. D) An orbital that penetrates into the region occupied by core electrons is more shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. 9) Which of the following statements is TRUE? E) None of the above is true. 10) When filling degenerate orbitals, electrons fill them singly first, with parallel spins. This is known as (the) A) Pauli exclusion principle. C) Hund's rule. B) Heisenberg uncertainty principle. D) Aufbau principle. 11) Give the complete electronic configuration for Mn. A) 1s2s22p63s23p64s 13 d6 C) 1s22s22p63523p64524p5 B) 1s22s2p63s23p64s23d5 D) 1s2522p63s23p64s24d5

Answer 1

6)
species having same number of electrons-isoelectronic
option D : P3-, S2-,Cl-, K+,Ca2+
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7)

C) S(g) + e- --> S-(g)
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8)
B) [Kr]5s2

9)
answer
option C) is the true statement
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10)
[Ar] 3d5 4s2
option B)
1s2 2s2 2p6 3s2 3p6 4s2 3d5
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