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Atomic Structure+PT
Y11 - CGP AQA Higher / Triple Chemistry Revision Guide - Topic 1
Radius of a atom | 0.1 nanometres , 1 x 10 -10 m |
Relative mass and charge of a proton | 1 , +1 |
Relative mass and charge of a neutron | 1 , 0 |
Relative mass and charge of a electron | Very small , -1 |
What is an ion? | An ion is an atom or group of atoms that has lost or gained electrons. |
What are isotopes? | Isotopes are different forms of the same element, which have the same number of protons but a different number of neutrons. So they have the same atomic number but different mass numbers. |
Formula to work out the relative atomic mass of an element | Ar = sum of (isotope abundance x isotope mass number) / sum of abundances of all isotopes |
Copper has two stable | Ar = (69.2 x 63) + (30.8 x 65) |