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s- Block Elements

Both lithium ...

Question

Both lithium and magnesium react with _______to form carbide unlike other alkali metals.

A

oxygen

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B

hydrogen

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C

carbon

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D

nitrogen

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Solution

The correct option is C carbon
Unlike other alkali metals lithium reacts directly with carbon to form an ionic carbide. Magnesium also forms a similar carbide.
Lithium reacts with carbon to form carbide because of its anomalous behaviour and Mg shows a diagonal relationship with lithium thus it also reacts with carbon to form carbide as a product.

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