The electron affinity of an element X is greater than that of element Y.

(a) How is the oxidising power of X likely to compare with that of Y?

(b) How is the electronegativity of X likely to compare with that of Y?

(c) State whether X is likely to be placed to the left or to the right of Y in the periodic table?

(a) X has more oxidising power compared to Y.
Reason — Oxidising Power refers to an element's ability to gain electrons and thus oxidize other substances. Given that element X has a greater electron affinity than element Y, X is more eager to accept electrons. This suggests that X has a stronger tendency to act as an oxidizing agent compared to Y.

(b) X will be more electronegative than Y.
Reason — A higher electron affinity correlates with higher electronegativity because both properties reflect an element's tendency to attract electrons. Since X has a greater electron affinity than Y, X is likely to have a higher electronegativity compared to Y.

(c) X will be placed to the right of Y.
Reason — Elements with higher electron affinities are generally found in the upper right part of the periodic table. Thus, if X has a greater electron affinity than Y, X is likely to be positioned further to the right compared to Y in the periodic table.