Question

1. ions -1

nitrogen
gain 3 electrons
nitrogen

protons: ______

protons: ______

neutrons: ______

neutrons: ______

electrons: ______

electrons: ______

ion: ______
ion: ______

Explanation:

Step1: Find nitrogen's proton count

Nitrogen has an atomic number of 7, so proton count = 7.

Step2: Find neutral nitrogen's electron count

Neutral atoms have equal protons/electrons: 7 electrons.

Step3: Calculate neutron count (common N isotope)

Nitrogen-14 is the most common isotope: neutrons = $14 - 7 = 7$.

Step4: Calculate ion's electron count

Nitrogen gains 3 electrons: $7 + 3 = 10$ electrons.

Step5: Identify ion charge

Gaining 3 electrons gives a -3 charge: $\text{N}^{3-}$.

Answer:

Left (Neutral Nitrogen):

Protons: 7

Neutrons: 7

Electrons: 7

Ion: Neutral (N)

Right (Nitrogen Ion):

Protons: 7

Neutrons: 7

Electrons: 10

Ion: $\text{N}^{3-}$ (Nitride ion)