Question

The elements of the second periodic table are:Li,Be,B,C,N,O,F. i)Give reasons to explain why atomic radii decrease from Li to F. ii) identity the most a) metallic and b) non metallic elements.

Answer 1

Due to large positive charge on the nucleus, the electrons are pulled in more close to the nucleus and the size of atom decreases from Li to F.

a) Most metallic - Lithium
b) Non metallic - Fluorine