Question

Which element has the highest atomic size ? Why ?

b. Which element has the least metallic property ? Why ?​

Answer 1

Answer:

C element has the highest atomic size

as we go from top to bottom ,size will increases due to increase in shell no.

and as we go from left to right ,size will decreases due to increasing z-effective

Answer 2

Answer:

C has the highest atomic size because atomic size increases down the group and decreases across the period.

B has the least metallic property because metallic property decreases across the period because ability to accept electrons increases.