Question

How is the tendency to gain electron change as we go. a)from left to right along a period.
b)down a group in the modern periodic table.​

Answer 1

Answer:

a) Tendency to gain electrons increases as we go from left to right in a period because the effective nuclear charge increases and the atomic radius decreases.

b) Vertical columns of the periodic table are known as groups.

(i) The number of valence electrons remains constant when we move down the group.

(ii) The number of occupied shells increases down the group. ...

(iii) The metallic character of elements increases down the group.