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Periodic table
Term | Definition |
---|---|
Symbol | A letter (or a pair) used to represent each element |
H | Hydrogen |
C | Carbon |
O | Oxygen |
N | Nitrogen |
Atomic number | The lowest of the 2 numbers for each element. |
Mass number | The Highest of the 2 numbers for each element. |
Na | Sodium |
K | Potassium |
Mg | Magnesium |
Ca | Calcium |
Cl | Chlorine |
S | Sulphur |