Statement-1 : Atomic mass of sodium is 23u
Statement-2 : An atom of sodium is 23 times heavier than atom of C-12 isotope

An atom of sulphur is __ times heavier than an atom of carbon.

The atomic mass of sodium is 23 . The gram-atomic mass of sodium is ………….

Assertion : Atomic mass of calcium is 40 u Reason : An atom of calcium is 40 times heavier than an atom of carbon with mass 12 u.

If the atomic mass of sodium is 23 , the number of moles in 46gm of sodium is:

Assertion (A): Atomic mass of potassium is 39. Reason (R ): An atom of postassium is 39 times heavier than 1//2th of the mass of carbon atom (C^(12)) .

Assertion (A): Atomic mass of potassium is 39. Reason (R ): An atom of postassium is 39 times heavier than 1//2th of the mass of carbon atom (C^(12)) .