Question

total number of valence electrons in 4.2 gram of N3 minus ion is.​

Answer 1

Answer:

i think 1.2 Na...

Explanation:

u can use formula that is

no.of moles× Na( avagadro no.) × 12

we multiply it by 12 becoz in 1 atom there are 4 electrons so in 3 nitrogen atom there will be 12 valence electrons

so in one molecule there is a presence of 12 valence electrons.....

hope it may help u...