Give the formulae of the chlorides of the elements X and Y having atomic numbers of 3 and 6 respectively. Will the properties of the two chlorides be similar or different? Explain your answer.
The formula of chloride of element X is XCl. X has electronic configuration 2,1 and chlorine has electronic configuration 2,8,7. So X donates 1 electron to Cl and forms an ionic compound.
The formula of chloride of element Y is YCl4. Y has electronic configuration 2,4 and chlorine has electronic configuration 2,8,7. So it shares 4 electrons with four chlorine atoms.
The properties of two chlorides will be different because XCl is an ionic chloride whereas YCl4 is a covalent chloride.
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