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7 September, 07:41

Element A has an electronegativity of 0.8 and element B has an electronegativity of 3.0. Which statement best describes the bonding in A3B? A) The AB bond is largely covalent with a on A. B) The AB bond is largely covalent with a δ + on A. C) The compound is largely ionic with A as the cation. D) The compound is largely ionic with A as the anion.

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  1. 7 September, 07:48
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    C) The compound is largely ionic with A as the cation.

    Explanation:

    Pulings proposed the method to determine if the compound is ionic in nature or covalent in nature, by finding the difference between the electronegativity of the respective cation and anion.

    The ion with higher electronegativity is the anion and the ion with lower electronegativity is the cation.

    The electronegativity difference above 1.7 make the compound ionic in nature.

    Hence, from the question,

    A is the cation and B is the anion.

    And the electronegativity difference above 1.7 so the compound is ionic in nature.
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