Part 1 (do NOT use the diagram provided)

How many valence electrons are in a neutral NH₄ molecule?

5


How many valence electrons are in a NH₄⁺ polyatomic ion?

8




Part 2 (use the diagram provided)

A student attempts to draw a lewis diagram to represent .



Complete the table to analyze the student's diagram.



Atom / polyatomic ion
Valence electrons

shown on diagram

Valence electrons

required

N atom
8

8

H atom (i)

8
5

H atom (ii)
8
5

H atom (iii)
8
5

H atom (iv)
8

5

Total polyatomic ion




Is the diagram correct or incorrect?