This is a matching answer type question as classified in NCERT Exemplar
Correct option is (ii)
A. Pb3O4is a mixed ore
B. N2O is a neutral oxide
C. Mn2O7is acidic oxide
D. Bi2O3is basic oxide
<p><span data-teams="true">This is a matching answer type question as classified in NCERT Exemplar</span></p><p>Correct option is (ii)</p><p><strong>A. </strong>Pb<sub>3</sub>O<sub>4</sub>is a mixed ore</p><p><strong>B.</strong> N<sub>2</sub>O is a neutral oxide</p><p><strong>C. </strong>Mn<sub>2</sub>O<sub>7</sub>is acidic oxide</p><p><strong>D. </strong>Bi<sub>2</sub>O<sub>3</sub>is basic oxide</p>
The inertness of ? subshell electrons towards bond formation is known as inert pair effect. This effect increases down the group thus, for Sn, oxidation state is more stable, whereas, for Pb, oxidation state is more stable, i.e., is reducing while is oxidising.
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