Question

IF NA IS AVAGADRO NUMBER THEN NUMBER OF ELECTRONS IN 4.2 g OF N^-3?

Answer 1

Answer:

Explanation:

Number of moles =  4.2/14=0.3 mol

0.3 mol =0.3×NA  ions.

⇒8×0.3×NA  electrons (as each ion contains 5+3=8e− )

⇒2.4 NA electrons..