Question

i)How would the tendency to gain electrons change as you go from left to right across a period? And ii) how would the tendency to gain electrons change as you go down a group

Answer 1

Explanation:

i) The tendency to gain electron increases as we go from left to right in a period because the effective nuclear charge increases and the atomic radius decreases.

ii) On moving down a group, the tendency to gain electrons (electronegativity) decreases as the atomic radius increases due to the increase in number of shells. This increases the distance between the nucleus and outermost shell. ... Hence it is easy to lose electrons instead of gaining electrons.