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    Chemistry
    Grade-9
    Easy

    Question

    What is the correct chemical formula for magnesium iodide?

    1. MgI2
    2. Mg2I
    3. MgI
    4. Mg2I2

    hintHint:

    In magnesium iodide two iodine atoms are present.

    The correct answer is: MgI2

      • In the chemical formula, metal is written first followed by non-metal.
      • In magnesium iodide, magnesium has a +2 oxidation state, and iodine has a -1 oxidation state.
      • A compound always tends to be neutral. Hence, two iodine atoms are present.
      • The correct chemical formula for magnesium iodide is MgI2.

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