The table below shows the relative mass and relative charge of protons, neutrons, and electrons. Some values are missing.
| Subatomic particle | Relative mass | Relative charge |
|---|---|---|
| Proton | [ A ] | [ B ] |
| Neutron | 1 | [ C ] |
| Electron | [ D ] | -1 |
State the values of [ A ], [ B ], [ C ], and [ D ].
The chemical symbol for an atom of one isotope of lithium is 37Li{}_{3}^{7}\text{Li}37Li.
(i) State the number of protons, neutrons, and electrons present in one neutral atom of this isotope.
What is meant by the term isotopes?
Copper has two naturally-occurring isotopes with mass numbers 63 and 65. A sample of copper contained the two isotopes in the following proportions:
Use this information to calculate the relative atomic mass of copper. Give your answer to two decimal places.
