Question

    Magnesium has atomic number as 12. Find out its

    valiancy.
    A +2 Correct Answer Incorrect Answer
    B -3 Correct Answer Incorrect Answer
    C -2 Correct Answer Incorrect Answer
    D +3 Correct Answer Incorrect Answer

    Solution

    The valency of magnesium with atomic number 12 is 2. The electronic configuration of magnesium is 2, 8, 2. As the valance shell contains two electrons, its valency is 2.

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