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Question

Elements of which of the following group(s) of periodic table do not form hydrides.

A
Groups 7, 8, 9
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B
Group 14
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C
Groups 15, 16, 17
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D
Group 13
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Solution

The correct option is A Groups 7, 8, 9
The region of the periodic table from group 7 to 9 is referred to as the hydride gap as elements of this group do not form hydrides due to their low affinity towards hydrogen in their normal oxidation states.

Hence, option (A) is correct.

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