Question

The mass of one atom of an element is 2 x 10^-23g. What could X element be?

Answer 1

Answer:

1 atom =2 × 10^-23 grams

=>6.022×10^23 atom=× 10^-23×6.022×10^23

grams atomic mass =12 gram

Therefore the element is Carbon ( it's mass number is 12 )