Question

The weight of helium atom in gram is

Answer 1

The atomic mass of Helium is 4, meaning each atom of helium weighs 4 amu.

1 amu=1.6 x 10^(-24) gm [1.6 x $10^{-24}$]

Thus 4 amu = 6.4 x $10^{-24}$

Answer 2

6.6464764 × 10^-24 g +
3.3210778 × 10^-30 g