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# In the periodic table Electronegativity of elements :

$(a)\;\text{decreases (i) From left to right across a period and (ii) on descending a group} \\(b)\;\text {decreases from left to right across a period and increases on descending a group} \\ (c)\;\text {increases from left to right across a period and descending a groups} \\ (d)\;\text {decreases (i) From left to right across a period and (ii) on descending a group}$

In the periodic table Electronegativity of elements are increases from left to right across a period and descending a groups
Hence c is the correct answer.