53. An element X is placed in group IA of the periodic table because it forms: (a) an oxide which is acid (b) a volatile chloride having formula XCl2 (c) an ionic chloride having formula XC) (d) an insoluble chloride XC14
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The elements in group I of the periodic table are called the alkali metals. They form ionic compounds when they react with non-metals. Their ions have a single positive charge. For example, sodium forms sodium ions, Na+.
The elements in Group 7 of the Periodic Table are called the halogens. They form ionic compounds when they react with metals. Their ions have a single negative charge. For example, chlorine forms chloride ions, Cl−.
Group 1A elements form XCl type chloride.
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