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- Potassium is the first element of the fourth period (row) in the periodic table.
- The atomic mass of potassium is 39.098 atomic mass units. It is denoted by the symbol ‘K’.
- The term potassium arises from a material called Potash.
- The element has been in use for hundreds of years.
- It is an alkali metal along with lithium, rubidium, sodium, caesium, and francium
- It is a very active metal and never occurs free in nature and it always forms a compound with other elements.
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