Can you please help me with the following questions, thanks! 21. The 4d subshell

Question

Can you please help me with the following questions, thanks!
21. The 4d subshell in the ground state of atomic xenon contains [al 2 [b] 6 22. Which electron orbital diagram represents a violation of the Aufbau principle? electrons. [c] 8 d] 10 e] 36 ls 2s 2s Ib] 2s ls 2s 1s 2s 2p Te] 23. The complete electron configuration of vanadium, element 23, is [c] 1s' 2s 2p 3s 3p [d] 1s 2s 2p 3s 3p 24. Which is the correct electron configuration for an oxide ion? a] 1s 2s 2p [b] 1s 2s 2p [c] 1s 2s22p [d] 1s'2s 3 [e] 1s 2s'2p 25. The condensed electron configuration of titanium, element 22, is [a] [Ar3s 3p [b] [Ne]3s [c] [Ar]3s 3p [d] [Ar]3d 4s [e] [Ne]3s43p2 of a photon n -2 to n 6 transition in the Bohr hydrogen atom corresponds to the with a wavelength of a] emission, 410 [b] absorption, 410 [c] absorption, 660 [d] emission, 94 [e] emission, 390 26. The nm

Explanation / Answer

21) option d (As Xe is a nobel gas)

22) both option a) and d) are wrong.

(option a violates Hund's principle and d) violates Pauling's exclusion principle)

23)Option b.

24)option c(as oxide is isoelectronic with Ne)

25) option d.

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