The alkali metal with the same number of electrons in 3rd orbit and 4t

1.	The alkali metal with the same number of electrons in 3rd orbit and 4th orbit is A) Na B)K C)Rb D)Cs
Answer» ONG>ANSWER: I THINK it's option d caesium(CS) Explanation: As atomic NO. of cs is 55 it electronic configuration is 2,8,18,18,1

The alkali metal with the same number of electrons in 3rd orbit and 4th orbit is A) Na B)K C)Rb D)Cs

Answer» ONG>ANSWER:

I THINK it's option d caesium(CS)

Explanation:

As atomic NO. of cs is 55 it electronic configuration is 2,8,18,18,1