Question

A. What is the total number of valence electrons in the polyatomic ion of Ammonium? 5, 6, 7, 8, 10

Answer 1

8

Step-by-step explanation:

Ammonium ion
`(NH_4)^+` is formed when ammonia
`(NH_3)` reacts with hydrogen ion
`H^+`

`NH_3+H^+=NH_4^+`

In
`NH_4^+` the nitrogen has 5 valence electron and there are 4 hydrogen each has 1 valence electron

So total number of valence electron =4+5=9

But
`NH_4^+` has 1 positive charge on it, it means it losses 1 electron

So total number of valence electron in poly atomic ion of
`NH_4^+` is 9-1=8