Question

Second period elements are given below: Li,Be,B,C,N,O,F.a)atomic size decreases from Li toF.why?b)mention the elements have more metallic property.c)mention the elements which have more non metallic property.

Answer 1

a) 1 proton is added in the nucleus of atom.

b) Li. B'coz its in 1st group.

c) B, C, N, O, F.

Answer 2

A) 1 proton is added in the nucleus.

B) Li.

C) F.