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12 January, 02:55

1) 3MgCl2

coefficient:

Subscript for Mg:

Subscript for CI:

+5
Answers (1)
  1. 12 January, 04:06
    0
    Coefficient = 3

    Subscript for Mg = 1

    Subscript for Cl = 2

    Explanation:

    Coefficient:

    A coefficient is number before the chemical formula which tells the number of molecules take part in chemical reaction.

    For example:

    2H₂ + O₂ → 2H₂O

    In this reaction 2 moles of hydrogen react with one mole of oxygen and produce 2 mole of water. The number 2, 1 and 2 are the coefficient.

    In given formula 3MgCl₂ the number before the formula which is three is coefficient.

    While the number written as subscript tell about the number of atoms of elements. e. g. in MgCl₂ two atoms of chlorine and one atom of magnesium are present in given formula. If only one atom of particular element is present then it is not written as subscript.
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