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(i) What is the oxidation state of TI in...

(i) What is the oxidation state of TI in the compound `TlI_(3)`?
(ii) Which is stronger oxidising agent between `CO_(2) and PbO_(2)` and why?

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(i) +1
(ii) `PbO_(2)`. Due to the inert pair effect, Pb is very unstable in +4 oxidaition state. Thus `Pb^(4+)` can be easily reduced to `Pb^(2+)`.
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