Question

Say the answer for this question please I will make u as brainliest

Answer 1

First of all, the ELECTRONIC CONFIGURATION of the ELEMENTS given are:

A) Nitrogen
B) Silicon
C) Phosphorus
D) Neon

& here's your subquestions answers:

a) B and C. (are belongs to the same period)
    A and D. (are belongs to the same period)

b) A and C.

c) D.

d) 'C' belongs to group- 15 and peroid- 3.