Simple Model of the Atom 0.0 / 5 ? ChemistryWhat's in a medicine?A2/A-levelOther Created by: J.E.C.Created on: 11-04-14 11:08 What is the relative mass of an electron? 0.00055 1 of 5 What does the atomic number represent? Number of protons in the nucleus. 2 of 5 Mass number = Number of protons + neutrons in the nucleus 3 of 5 What is an isotope? Atoms of the same element which have different mass numbers. (different number of neutrons) 4 of 5 How would you find the relative atomic mass from isotopes? (isotopic mass x abundance) + (isotopic mass x abundance) / 100 5 of 5
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