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Which of the following statements is/are correct

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GeO, SnO adn PbO are basic and ionic than the corresponding GeO₂, SnO₂ and PbO₂

GeO is acidic while SnO and PbO are amphoteric

Ge²⁺ and Sn²⁺ are strong oxidising agents

The mixed oxide Pb₃O₄ contains Pb⁺² and Pb⁺⁴ ions

answer is B, D.

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Detailed Solution

Increased stability of lower valent states on descending a group is illustrated by the fact that Ge²⁺ and Sn²⁺ are strong reducing agents.
Pb₃O₄ (red lead) is 2PbO.PbO₂ and thus contains both Pb² and Pb⁴⁺ ions.

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