Question

Define atomic radius along the period and along the group in Modern Periodic Table.

Answer 1

Answer:

along the period decrease and along the group increases

Answer 2

$* \: \red{ \Huge{\boxed{\boxed{\underline{\bf Answer}}}}*}$

$\Huge \blue{\boxed{\underline{\underline{ along \: period \: }}}}$

• along the period atomic radius generally decreasing due to increasing in nuclear charge.
• size of oxygen is more than nitrogen due to first pairing of electron in 2P orbital
• size of Neon is maximum in second period due to presence of vanderwall's walls radius.
• example can be see in the attachment 1st

$\Huge{\boxed{\underline{\bf \:along \: group \: } \}}}*$

• as we go down the group size of atom increase due to increase in number of shell
• so radius of atom on going down the group increases continuously.
• maximum atomic radius in periodic table is of Cs