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3 August, 00:18

Which of the following compounds has an atom with an unfilled valence shell of electrons? And why? A. H3O+B. BF3C. CH3OHD. NaI

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  1. 3 August, 02:15
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    Answer: BF3

    Explanation: boron needs 4 electron to obtain octet and Fluorine has just one. For the valence shell to be completely filled it will have to form BF4 - with 4 fluorine atom surrounding it.
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