Question

Elements, P, Q, R and S have the following electronic
configurations:
P:[Ar]3d104s
Q : [Ar]3d104s24p5s
R : [Ar]3d104s24p 4d1055' S : [Ar]3d104s24p 4d5s1
Which two elements fall into the same group?
(a) and R
(b) P and R
(c) Q and S
(d) P and Q​

Answer 1

Explanation:

a) P and S, Q and R - belongs to same period.

b) P and Q, belongs to same group

c) S

d) R belongs to 3rd period and 15th group

Answer 2

Explanation:

d)p and Q is the answer

I think this answer will correct