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Write a name of an element having variable valency. |
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Answer» Answer: List of elements having variable valency Explanation: Iron : → ferrous - Fe 2+ → FERRIC - Fe 3+ Copper : → cuprous - Cu + → CUPRIC - Cu 2+ Mercury. → mercurous - Hg + → MERCURIC - Hg 2+ Gold. → aurous - Au + → AURIC - Au 3+ Silver. → argentous - Ag + → ARGENTIC - Ag 2+ Lead. → plumbous - Pb 2+ → plumbic - Pb 4+ Platinum. → platinous - Pt 2+ → platinic - Pt 4+ Tin. |
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