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- 1How many electrons can be in each electron shell?Two on the inside and eight on the outer shells
- 2If there are 12 protons in an atom, how many electrons are there?12 - there are always the same number of protons as there are electrons
- 3What is the relative charge and relative mass of protons, neutrons and electrons?
- 4Who developed the atomic theory?John Dalton
- 5If the mass number of an atom is 19, and the atomic number is 9, how many neutrons are there?10
- 6The Group in the Periodic Table shows how many shells there are in an electron, what does the Period show?How many electrons in the outer shell
- 7What is an isotope?Atoms of the same element that have the same atomic number but a different mass number
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- Fichas sobre Sin título, creado por ebonyrose1999 el 17/10/2014.
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