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Oxides and Oxoanions

Increasing ba...

Question

Increasing basic properties of $T i O_{2}, Z r O_{2}$ and $H f O_{2}$ are in order:

T i O_{2} < Z r O_{2} < H f O_{2}

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H f O_{2} < Z r O_{2} < T i O_{2}

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H f O_{2} < T i O_{2} < Z r O_{2}

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Z r O_{2} < T i O_{2} < H f O_{2}

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Solution

The correct option is A $T i O_{2} < Z r O_{2} < H f O_{2}$
The basic properties of the oxides increases with atomic number: $T i O_{2}$ is amphoteric, and $Z n O_{2}$ , $H f O_{2}$ are increasingly basic.

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