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6. how reactive are noble gases with a full outer shell
- very reactive
- unreactive
- slightly reactive
7. what is the atomic number equivalent to
- number of protons
- number of electrons
- number of neutrons
- atomic mass
8. what charge does a proton have
9. where is a neutron found
- in the nucleus
- in shells orbiting the neucleus
10. how do you work out the number of neutrons
- atomic mass - number of protons
- number of protons - atomic mass
- atomic number - number of protons
11. in the periodic table, which number is the atomic number
12. what is the atomic mass of a proton and neutron
13. what is the number of protons equivalent to
- atomic mass
- mass number
- number of electrons
- number of neutrons
14. what charge does a neutron have
15. whats the atomic mass of an electron
16. what is the formular for sodium