Question

Select the correct answer.
What is the position of an element in the periodic table if its electron configuration is 1s2 2s2 2p6 3s2 3p5?

A.
It's a group 5A element.

B.
It's a group 6A element.

C.
It's a group 3A element.

D.
It's a group 7A element.

Answer 1

Answer:

The element is chlorine.

It is in the group of 7A element.

Answer 2

Answer:

Explanation:

It's at 3 group element. The simple trick is no of shell is equal to no of group.