The thermal stability order for group 14 tetrahalides is :

{C X}_{4} > {S i X}_{4} > {G e X}_{4} > S n X_{4}

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{S n X}_{4} > {G e X}_{4} > {S i X}_{4} > {C X}_{4}

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{S i X}_{4} > {C X}_{4} > {G e X}_{4} > S n X_{4}

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None of these

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Solution

The correct option is A ${C X}_{4} > {S i X}_{4} > {G e X}_{4} > S n X_{4}$
The thermal stability of group 14 tetrahalides decreases down the group that is it follows the order ${C X}_{4} > {S i X}_{4} > {G e X}_{4} > S n X_{4}$ .

This is due to decrease in covalent nature.

Option A is correct.

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