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Rationalise the given statements and giv...

Rationalise the given statements and give chemical reactions : • Lead(II) chloride reacts with `Cl_(2)` to give `PbCl_(4)`. • Lead(IV) chloride is highly unstable towards heat. • Lead is known not to form an iodide, `PbI_(4)`.

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a.Due to inert pair effect, `+2` oxidation state in `Pb` is more stable than `+4` oxidation state, hence, lead `(II)` chloride will not react with `Cl_(2)` to give `PbCl_(4)`.
`PbCl_(2)+Cl_(2)to` no reaction
b.Due to inert pair effect, `Pb(IV)` is less stable than `Pb(II)`, hence, lead `(IV)` chloride will decompose on heating to give lead(II)chloride and chlorine.
`PbCl_(2)overset("Heat")to PbCl_(2)+Cl_(2)uarr`
c. Lead is not known to form an iodide `(Pbl_(4))` due to high oxidising power of `Pb(IV)` ion and high reducing power of `I^(ө)` ion.
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