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Octet Rule

Which one of ...

Question

Which one of the following statements about stable configuration is not correct?

A

They have their valence shell fully filled

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B

They do not gain, lose or share electrons

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C

They have 2 or 8 electrons in their outermost shell

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D

Halogens belong to stable configuration

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Solution

The correct option is D Halogens belong to stable configuration
Halogen family has 7 electrons in tis valence shell but for stable configuration they should have 8 electrons. They can gain one electrons. This property is contrary to stable configurations.

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