Gallium has an atomic number of 31 and a mass number of 70.
1. What are the number of protons, neutrons, and electrons in a gallium ion with a +3 charge?
The atomic number of gallium is 31, which means it has 31 protons.
The mass number of gallium is 70, which means it has 70 - 31 = 39 neutrons.
A gallium ion with a +3 charge means it has lost 3 electrons. So, the number of electrons in a gallium ion with a +3 charge is 31 - 3 = 28.
Therefore, a gallium ion with a +3 charge has:
- 31 protons
- 39 neutrons
- 28 electrons