How many bonds does chlorine make with oxygen in perchloric acid?

3 double bonds and a single bond

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7 single bonds

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2 single bonds and 2 double bonds

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3 single bonds and a double bond

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Solution

The correct option is A 3 double bonds and a single bond
The formula for perchloric acid is $H O C l O_{3}$ , in which the chlorine group is attached to 3 oxygen atoms and a hydroxyl group. The 3 oxygen atoms are attached to chlorine through a double bond and the hydroxyl group is singly bonded to chlorine. Thus, there are 3 double bonds and a single bond between oxygen and chlorine.

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