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6. what is there mass of an electron?
7. what is there mass of a neutron?
8. where are neutrons found?
9. a neutral atom has the same number of ........and.......
- neutrons and protons
- protons and elections
- electrons and neutrons
10. what does the nucleus contain?
- protons and neutrons
- electrons and protons
- Neutrons ans electrons
11. what does the atomic number tell you?
- number of neutrons
- number of protons
- number of electrons
12. how many types of subatomic particles are there in an atom?
13. what does the mass number tell you?
- the total number of protons and neutrons
- the total number of electrons and protons
- the total number of protons and electrons
14. what is the charge of an electron
15. where are electrons found?
16. how do you find a mass number of an atom?
17. what is the charge of a proton?
18. what is the mass of a proton?