5. In an ionic compound with formula X₂O, X could represent which element? (A) lithium (C) calcium (B) fluorine (D) aluminum 6. Which is a chemical separation technique? (A) freezing water (B) evaporation of water (C) distillation: evaporation followed by condensation of water (D) electrolysis: passing an electrical current through water to produce hydrogen and oxygen

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Group 14 Elements

The following elements come under group 14 of the periodic table.