Question

If NA is Avogadro's number then number of
electrons in 4.2 g of N-3:-
no​

Answer 1

Answer:

answer is 3 NA

Explanation:

Explain....

•atomic mass of N = 14 gm

•total mass of e- in N = 10

•if 14 gm N3 contain = 10NA e-

•then 1 gm of N3 = 10NA/14

•So 4.2 gm of N3 = 4.2x10NA/14 = 3NA