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What is valency? Explain different types of valencies.

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What is valency? Explain different types of valencies.

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The combining capacity of an atom is called its valency.

There are 2 types of valencies.

Covalency: When an atom share electrons have combining capacity.

Electrovalency: When an atom loses or gains electrons.

Some atoms also show zero valency when there outermost shell is completely filled.

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