Classification Of Elements And Periodicity In Properties Ques 139
Question: An element has the electronic configuration $ 1s^{2},2s^{2}2p^{6}, $
$ 3s^{2}3p^{6}3d^{5},4s^{1} $ . It is a
Options:
A) s-block element
B) p-block element
C) d-block element
D) Inert gas
Show Answer
Answer:
Correct Answer: C
Solution:
d-block. As the last $ {{e}^{-}} $ enters in d-subshell.
