Multiple Choice Questions on The octet rule is not valid for which one of the following molecules ........ for General Studies (Level 1) Preparation

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Multiple Choice Questions

The octet rule is not valid for which one of the following molecules ........

General Science (Easy) Chemistry
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    The octet rule is not valid for which one of the following molecules?

    CO2

    Incorrect Answer

    H2S

    Incorrect Answer

    NH3

    Incorrect Answer

    BF3

    Correct Answer
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    Explanation:

    BF3

    In carbon dioxide, water and oxygen the octet rule are obeyed. Each of these molecules has 8 electrons on the central atom. 

     
    However, in NO, the octet rule is not valid as it is an odd electron molecule. 
     
    Nitrogen has 5 valence electrons and oxygen has 6 valence electrons.

    By: Pradeep Kumar
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