Question

If the valence shell electronic structure for an element is ns2 np5 , this element will belong to

Answer 1

ns2np5 belong to halogen family (groupVIIA)

Answer 2

Answer: The element will belong to Group 17.

Explanation:

We are given:

Valence shell electronic configuration of element = $ns^2np^5$

Total number of valence electrons = [2 + 5] = 7

As, the last electron is entering p-subshell. So, the element is a p-block element.

The group having '7' valence electrons is Group 17.

Hence, the element will belong to Group 17.