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7 June, 20:10

Be sure to answer all parts. identify the main group to which x belongs in each ionic compound formula: (a) xf2; (b) mgx; (c) x2so4 xf2 mgx x2so4

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  1. 7 June, 22:49
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    Part (a):

    For the compound XF₂, X must be a metal. As fluorine is monovalent and there are two fluorine atoms, so the valency of X must be two.

    Therefore, X belongs to group 2

    Part (b):

    For the compound MgX, X must be non-metal. As magnesium is divalent and there is one magnesium atom, so the valency of X must be two.

    Therefore, X belongs to group 16

    Part (c):

    For the compound X₂SO₄, X must be a hydrogen or metal. As sulfate is divalent and there is two X atoms, so the valency of X must be one.

    Therefore, X belongs to group 1
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