Question

The element of second period of periodic table is given below: Li Be B C N O F a) Give reason to explain, why atomic radii decreases from Li to F. b) Identify the most ---- i) Metallic (ii) Non-metallic element.

Answer 1

a)The atomic radius decreases in moving from left to right along a period.This is due to an increase in nuclear charge which tends to pull the electrons closer to the nucleus and reduces the size of the atom.

b) most metallic element is Lithium li as we know metallic character decreases as we move from left to right.

c) most non metallic element is fluorine as we know that on moving from left to right metallic character decreases and non metallic character increases.

Answer 2

The element of second period of periodic table is given below: Li Be B C N O F