Question

1. The total number of electrons in 4.2 g of N3-ion is
(Na is the Avogadro's number)
(1) 2.1 NA
(2) 4.2 NA
(3) 3 NA
(4) 3.2 N​

Answer 1

Answer:

1 mole has NA electrons

so, no.of moles = 4.2/14 = 0.3 moles

then it must be 0.3 x NA

but N3- has 10 electrons

so , no.of electrons = 10 x 0.3 NA

I.E 3NA

Hope u get it mate.....

if wrong let me know mate.......

Answer 2

Explanation:

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