Question

a nitrogen ion has a mass of 14 and a charge of +2. which subatomic particles does it contain? (1 point) option 1: 7 protons, 7 neutrons, and 9 electrons option 2: 4 protons, 4 neutrons, and 6 electrons option 3: 7 protons, 7 neutrons, and 5 electrons option 4: 2 protons, 6 neutrons, and 6 electrons

Explanation:

Step1: Recall nitrogen's atomic number

Nitrogen has an atomic number of 7, which means it has 7 protons.

Step2: Calculate neutrons

Mass number = protons + neutrons. Given mass number = 14 and protons = 7, then neutrons = 14 - 7=7.

Step3: Calculate electrons

A charge of + 2 means 2 electrons are lost. Neutral nitrogen has 7 electrons, so the ion has 7 - 2 = 5 electrons.

Answer:

7 protons, 7 neutrons, and 5 electrons