Question

an element X readily accepts an electron from another element Y predict the nature of element​

Answer 1

The elements in the Group-17 are known as halogens. The elements in this group (like Fluorine, Iodine, Chlorine, Bromine, etc.) readily accept one electron from any element to attain the nearest inert gas configuration to become stable.

As the elements in the Group-1 which are known as Alkali metals are readily available to donate one electron to any element to attain the nearest inert gas configuration to become stable, they are highly reactive (metals). Similarly, halogens are also highly reactive (non-metals).

Now, coming to the question.

An element X readily accepts an electron from another element Y predict the nature of element​.

The answer here becomes: Element X belongs to halogens and element Y belongs to alkali metals.