Gallium has an atomic number of 31 and a mass number of 70. Which table shows the number of protons, neutrons, and electrons in a gallium ion with a +3 charge?(1 point)ResponsesParticle Numberprotons 31neutrons 39electrons 31Particle Number protons 31 neutrons 39 electrons 31Particle Numberprotons 39neutrons 31electrons 36Particle Number protons 39 neutrons 31 electrons 36Particle Numberprotons 31neutrons 39electrons 28Particle Number protons 31 neutrons 39 electrons 28Particle Numberprotons 39neutrons 31electrons 39

To determine the number of protons, neutrons, and electrons in a gallium ion with a +3 charge, we start with the following information:

- The atomic number of gallium (Ga) is 31, which means it has **31 protons**.
- The mass number of gallium is 70, which can be used to find the number of neutrons. The number of neutrons can be calculated using the formula:

\[ \text{Neutrons} = \text{Mass Number} - \text{Atomic Number} \]

So,

\[ \text{Neutrons} = 70 - 31 = 39 \]

- In a neutral atom, the number of electrons equals the number of protons. Since gallium has a +3 charge, it has lost 3 electrons. Therefore, the number of electrons in the ion is:

\[ \text{Electrons} = \text{Protons} - 3 = 31 - 3 = 28 \]

Now we can summarize the particle counts for the gallium ion with a +3 charge:

- Protons: 31
- Neutrons: 39
- Electrons: 28

Thus, the correct table is:

**Particle Number**
- Protons: 31
- Neutrons: 39
- Electrons: 28

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