D-And F-Block Elements Ques 359
Question: The number of unpaired electrons in $ C{{r}^{3+}} $ ion is
[Kurukshetra CET 2002]
Options:
A) 3
B) 5
C) 4
D) 1
Show Answer
Answer:
Correct Answer: A
Solution:
In $ C{{r}^{3+}} $ number of unpaired $ {{e}^{-}}=3 $ .
A electronic configuration of $ C{{r}^{3+}}=1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{3} $ .