Question

what is atomic radius?Is the group top to bottom increase true or false?????

Answer 1

Distance between nucleus and outer shell of atom is called its radius. Yes along the group atomic radius increases from top to bottom.

Answer 2

the distance between the centre of the atom and the outermost cells,
it is true because each new cell is added up, increasing the space between the neutrons and OMS, and thus increase in atomic radius
hope this helps you!!!