The elements ‘X’, ‘Y’, and ‘Z’ form oxides which are acidic, basic, and amphoteric respectively. The correct order of their electronegativity is

Electronegativity is the measure of the tendency of an atom to attract the bonding pair of electrons towards them. It decreases down the group with an increase in atomic size and it increases from left to right in the period with a decrease in atomic size. The nature of oxides from left to right in a period is basic, amphoteric, and acidic. Therefore, the correct order of elements is acidic oxides > amphoteric oxides > basic oxides or X > Z > Y . PERIODIC PROPERTIES 56