The total number of Bond pairs around Sulphur and total number of lone pair on oxygen atom in Lewis structure sulphate Ion are respectively.

4, 10

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8, 12

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12, 4

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6, 12

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Solution

The correct option is A 4, 10
The Lewis structure for the sulfate ion consists of a central sulfur atom with four single bonds to oxygen atoms. This yields the expected total of 32 electrons. Since the sulfur atom started with six valence electrons, two of the S-O bonds are coordinate covalent.

Hence , correct answer is 4,12.

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