Question

The number of atoms in $60$g. of neon is: $[Ne=20]$.

Answer 1

No. of moles atoms in $60g$ of Ne [Ne=$20$]

No. of moles$=\frac{Givenmass}{GramAtomicMass}=\frac{60}{20}=3$

n=$3$

$1$mole contains$⟶6.022\times {10}^{23}$atoms

$3$mole contains$⟶3\times 6.022\times {10}^{23}⟶18.066\times {10}^{23}$atoms

No. of atoms in $60$g of Ne=$18.066\times {10}^{23}$atoms