Question

21. Name the element and write its symbol whose 1 atom weighs 3.984×10^-23 g and also write the chemical
formula of its chloride.​

Answer 1

Answer

The mass of one atom of an element,

A=3.98×10

−23

g

We know, 1 mole of an atom is 6.023×10

23

atoms.

1 mole of an atom = its atomic weight

∴ Atomic weight of element A=3.98×10

−23

×6.023×10

23

=23.97g≈24g