What is Variable Valency? Name Two Elements Having Variable Valency and State Their Valencies. - Chemistry
What is variable valency? Name two elements having variable valency and state their valencies.
Variable valency: Some elements exhibit more than one valency. They are said to have variable valency, e.g. Iron, copper, tin, lead.
Iron Fe Fe2+ or Fe3+
Copper cu cu+ or cu2+
Concept: Atomic Number (Z)
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