Question

Please tell 5 one please

Answer 1

Answer:

1. chlorine = (2,8,7)

2.Valency of the element is 0.

3. An atom consists of a sphere of positive charge with negatively charged electrons embedded in it.

The positive and negative charges in atom are equal in magnitude due to which an atom is electrically neutral. It has no overall positive or negative charge.

4. (a) Atomic no.: 5

Atomic mass: 11

valency: 3

(b) Atomic no.: 8

Atomic mass: 18

valency: 2

(c) Atomic no.: 15

Atomic mass: 31

valency: 3