[tex]\\ \tt\longmapsto No\:of\:atoms=No\:of\:moles\times Avagadro's constant [/tex]
[tex]\\ \tt\longmapsto No\:of\: atoms=0.83(6.022\times 10^{23})[/tex]
[tex]\\ \tt\longmapsto No\:of\: atoms=4.99\times 10^{23}[/tex]
