Question

Study the radius of the element given below and answer the following questions. elements K Na Rb Cs Li Atomic radius (pm) 231 186 244 262 151 a) Which of above element have smallest atom? b) In which group of modern periodic table the above element are belongs? c) What is the periodic trend observed in the variation of atomic radii down a group?

Answer 1

a)Lithium

b)Group no .1

c) Atomic radii increases down a group,as number of shells are adding one at a time

Tip- Size of the element is decided on its atomic radii (pm).

I hope you understand.

Answer 2

hope it will help u.....