Question

Calculate the average atomic mass of chlorine if it exists commonly in two isotopes in the ratio 3:1. Helium atom has 2 electrons in its valence shell but its valency is not 2. Explain

Give the answer fast

Answer 1

Answer:

1) 35×3+37×1÷3+1=35.5

2) because helium is inert gas and has stable electronic configuration so it has valency 0

Answer 2

Answer:

I dont know whom u r

In that u r saying that to me

Explanation:

I mean my last question