Chemistry
What is variable valency? Give two examples of elements showing variable valency.
Valency
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Answer
Some elements exhibit more than one valency and they are said to have variable valency.
Examples: Iron and copper.
| Metal | Radicals | Valency |
|---|---|---|
| Iron (Fe) | Ferrous, Ferric | 2, 3 |
| Copper (Cu) | Cuprous, Cupric | 1, 2 |
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