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Which of the following statement is incorrect.
Option: 1
SiO only exists at high temperature.

Option: 2
Germanium forms stable compounds in +2 state.

Option: 3
Sn in +2 state is a reducing agent.

Option: 4
Lead in +4 state are strong oxidising agent.

Answers (1)

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Solution- Germanium forms stable compounds in +4 state and only few compounds in +2 state. As stability of lower oxidation state increases as we go down the group due to inert pair effect.

$\mathrm{Ge^{2+} < Ge ^{4+} \text{ whereas }Pb^{2+} > Pb^{4+}}$

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