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Question

Which of the following family exist as diatomic molecules at room temperature?

A
Alkali metals
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B
Alkaline earth metals
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C
Noble gases
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D
Halogens
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E
Transition metals
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Solution

The correct option is D Halogens
Halogens exist as diatomic molecules at room temperature. The valence shell electronic configuration of halogens is ns2np5. Two halogen atoms share one electron each to form diatomic molecule in which each halogen atom has completed its octet.

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