Question

what is Atomic mass of HYDROEN ,OXYGEN and CHLORINE?​

Answer 1

hydrogen 1

oxygen 16

chlorine 35.5

Answer 2

Explanation:

Atomic mass of Hydrogen= 1.007

Atomic mass of Oxygen= 15.99

Atomic mass of Nitrogen= 14.006

Atomic mass of chlorine= 35.5

Molecular mass of hydrogen= 2×1.007=2.014

Molecular mass of oxygen= 2×15.99=31.99

Molecular mass of nitrogen= 2×14.006=28.01

Molecular mass of chlorine= 2×35.5=71

This is because in molecular state hydrogen, nitrogen, oxygen and chlorine exist as H

2

,N

2

,O

2

and Cl

2

respectively. Atomic mass is of single atom, while molecular mass of these element is of their combined state and as they exist as diatomic their molecular mass are double of their atomic mass.