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Q.

Which of the following statement about IV group elements (C to Pb) is not correct

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a

Only Sn and Pb form dichlorides

b

The thermal stability of hydrides decreases from CH4 to PbH4 as bond enthalpy for M - H bond decreases

c

All form tetra iodides

d

All form Tetrafluorides, Tetrachlorides

answer is D.

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Detailed Solution

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For example PbI4 does not exist because Pb4+ ion is strong oxidizing agent and I ion and gets reduced to Pb2+ ion

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