What is geometry of chromate ion?

Tetrahedral

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Octahedral

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Trigonal planer

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Linear

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Solution

The correct option is A Tetrahedral

The chromate ion $(C r O_{4}^{2 -})$ has a tetrahedral shape, whereas dichromate ion has two tetrahedral units with one common oxygen having $C r - O - C r$ bond angle of $126^{o}$ .

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What would happen when solution of potassium chromate is treated with the excess of nitric acid?

H_{2} C r O_{4}

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