Question

Give reason for the following statements on periodic trends in modern periodic table of
elements.
a) Along the period, from left to right, the atomic radius values of the elements
decrease whereas along the groups, from the top to bottom, the atomic radius
increase
b) The electron affinity values increase along the period from left to right and decrease
down the group.
c) The ionization energy values increase along the period from left to right and
decrease down the group.​

Answer 1

Answer:

a)at.radius decreases along the period bcz the effective nuclear charge increases due to which atom contracts n down the group at.radius increases as shell no. increases due to which screening effect increases .

b)electron affinity has the same reason as mentioned above.

c)same as above.