Classification Of Elements And Periodicity In Properties Question 224
Question: The electronic configuration of an element is $ 1s^{2},2s^{2},2p^{6},3s^{2},3p^{3} $ . What is the atomic number of the element which is just below the above element in the periodic table [CBSE PMT 1995]
Options:
A) 33
B) 34
C) 31
D) 49
Show Answer
Answer:
Correct Answer: A
Solution:
$ 33-1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{3} $
BETA
