Question

Sodium is represented as

(а) What is its atomic mass?

(b) Write its gram atomic mass.

(c) How many atoms of Na will be there in 11.5 g of the sample?​

Answer 1

Na

Its atomic number is 11.

Its gram atomic mass is 23.

, If 23 g sodium contains 6.023 x 1023 atoms, then 11.5 g sodium contains 3.0115 x1023 atoms.

Answer 2

(a) Atomic mass of sodium= 11

(b) Gram atomic mass of sodium = 23 g

(c) Atoms in 11.5 g of sample contains,

lf 23 g sodium contains 6.023 x 1023 atoms, then

11.5 g sodium contains 3.0115 x 1023 atoms.