Question

For the main groups of periodic table given as follows:

1	2	13	14	15	16	17	18
H							He
A						B
C						D

(a) Which element is the most metallic? 

(b) Which atom is the largest?

Answer 1

(a) We know that metallic character decreases from left to right in a period and metallic character increases down a group. So element C is the most metallic. 

(b) We know that the size of atom decreases from left to right in a period and size of atom increases down a group. So atom C is the largest.