Which of the following statement about IV group elements ( C to Pb) is

1.	Which of the following statement about IV group elements ( C to Pb) is not correct
Answer» The thermal stability of hydrides decreases from `CH_(4)" to "PbH_(4)` as bond enthalpy for M - H bond decreases All form tetra fluorides, tetra CHLORIDES, tetra bromides Only Sn and PB form dichlorides All form tetra iodides Solution :For example `PbI_(4)` does not exist because `Pb^(4+)` ion is string oxidising agent and `I^(-)` ion and GETS reduced to `Pb^(2+)` ion

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