Question

A nitrogen ion has a mass of 14 and a charge of +2. Which subatomic particles does it contain?(1 point)
Responses

7 protons, 7 neutrons, and 5 electrons
7 protons, 7 neutrons, and 5 electrons

7 protons, 7 neutrons, and 9 electrons
7 protons, 7 neutrons, and 9 electrons

2 protons, 6 neutrons, and 6 electrons
2 protons, 6 neutrons, and 6 electrons

4 protons, 4 neutrons, and 6 electrons

Answer 1

To determine the number of subatomic particles in a nitrogen ion with a mass of 14 and a charge of +2, we can use the following information:

1. **Nitrogen (N)** has an atomic number of 7, which means it has 7 protons.
2. The mass number (which is the sum of protons and neutrons) for this ion is given as 14. Since it has 7 protons, we can find the number of neutrons by subtracting the number of protons from the mass number:
\( \text{Number of neutrons} = \text{Mass number} - \text{Number of protons} \)
\( \text{Number of neutrons} = 14 - 7 = 7 \)

3. The ion has a charge of +2, which means it has lost 2 electrons compared to a neutral nitrogen atom. A neutral nitrogen atom has 7 electrons (equal to the number of protons). Thus, for this ion, the number of electrons is:
\( \text{Number of electrons} = 7 - 2 = 5 \)

Putting this all together, the nitrogen ion with mass 14 and charge +2 consists of:
- 7 protons
- 7 neutrons
- 5 electrons

So the correct response is:
**7 protons, 7 neutrons, and 5 electrons**.