1. An atom has a total of 9 electrons. How many electrons will it tend to gain?

2. The central part of an atom.

3. The negative part of an atom.

4. The positive part of an atom.

5. The part of an atom that has no charge.

6. If an atom has an atomic number of 13 and a mass number of 26.98, then the number of protons that it has will be...

7. If an atom has an atomic number of 13 and a mass number of 26.98, then the number of protons plus neutrons that it have will be...

8. If an atom has an atomic number of 13 and a mass number of 26.98, then the number of neutrons that it has will be...

9. If an atom has an atomic number of 11 and a mass number of 22.99, then the number of neutrons that it has will be...

10. If an atom has an atomic number of 11 and a mass number of 22.99, then the number of protons that it has will be...