Assertion :Hydrogen is a diatomic molecule. Reason: Hydrogen atom has a single electron in its outermost shell
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion H atom having single e− in order to complete its outer most shell it requires 1 more e− which it shares from other H atom and forms H2 molecule and hence exists as diatomic molecule.