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

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