Atomic mass of elements: Carbon, Nitrogen, Oxygen, Sulphur, Chlorine, Hydrogen

Atomic mass unit(amu) is denoted as ‘u’.

1amu = 1/12^th of mass of C-12 isotope.

Atomic mass of Nitrogen is 14.0067 u.

Atomic mass of Oxygen is 15.999 u.

Atomic mass of Sodium is 22.989769 u.

Atomic mass of Chlorine is 35.453 u.

Atomic mass of Sulphur is 32.065 u.

Atomic mass of Hydrogen is 1.00784 u.

Atomic mass of Carbon is 12.0107 u.