Question

An element has its electronic configuration as 2, 8, 2. Now answer the

following questions:

(a) What is the atomic number of this element?

(b) What is the valency of this element?

(c) With which of the following elements would these elements

resemble?

(Atomic numbers are given in brackets) N(7), Be(4), Ar(18), C1(17).​

Answer 1

Answer:

The element is Magnesium(Mg)

(a) 12

(b)2

(c) Be(4)

Hope this answer helps you out .