Question

The total number of valence electrons in a nitrate ion is

Answer 1

Hey
Here is your answer

Valence electrons of No3- is 23

There are 5 electrons in outermost shell of Nitrogen and 6 electrons in outermost shell of o2

So there are 3 oxygen atom in no3-
So total

( 5 + 3 * 6)
18 + 5 = 23

hope it helps