Exam (elaborations)
AS chemistry revision graded A
- Module
- Institution
mass of an electron 1/2000th of a proton relative charge and relative mass of a proton, neutron, and electron proton: charge=+1 mass=1 neutron: charge=0 mass=1 electron: charge=-1 mass=1/2000th 00:01 01:39 atomic number the number of protons in the nucleus of an atom ...
[Show more]