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please only answers for questions 1-23. No work needed

1) Give the ground state electron configuration for the ion of Ba. A) [Krj5s24d 105pfes2 B) (KrjS24d105ph26p2 9(KrjS24d105p6
6) Identify the iscelectronic elements A) Zn2, Co2+, Cu2, C2+,Cd2 B) C-, F-, Br . Ir, Atr C Ne. Ar. Kr. Xe. He D) p3- 2- C1-,
12) Choose the orbital diagram that represents the ground state of N. A) 1 11 1L 1 1 1s 2s 2p B) 1 11 a 1L 1s 2s 2p C) 1 1 1s
14) Choose the valence oebital diagram that represents the ground state of Zn A) 1 1 111 1 4s 3d B) 1L 1L 1 1 1 4s 3d 4s D) 1
20) Place the following in order of increasing metallic character. Rb Cs K Na A) Na<K Rb < Cs B) K<Cs<Rb < Na C)K<Cs <Na < Rb
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Ans-fC) elecfronic Conbigatre 2 2 1s2222p63s 3b3d (kr7sstyd1sp 36 Bot Kr 54d56 36 Angwet C Ans-i Nal ence shell ombiypatre ys

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