Atomic Structure Question 315
Question: Consider the ground state of $ (Z=24) $ . The numbers of electrons with the azimuthal quantum numbers, $ l=1 $ and 2 are, respectively [AIEEE 2004]
Options:
A) 16 and 4
B) 12 and 5
C) 12 and 4
D) 16 and 5
Show Answer
Answer:
Correct Answer: B
Solution:
$ _{24}Cr\to 1s^{2},,2s^{2},,\underset{l=1}{\mathop{2p^{6}}},,,3s^{2},,\underset{l=1}{\mathop{3p^{6}}},,\underset{l=2}{\mathop{,3d^{5}}},,,4s^{1} $ (We know that for p the value of $ l=1 $ and for $ d, $
$ l=2) $ For $ l=1 $ total number of electron = 12 For $ l=2 $ total number of electron = 5.
