Question

The metallic and nonmetallic properties of elements can be judged by______
a) electron gain enthalpy
b) ionization enthalpy
c) electronegativity
d)valence

Answer 1

Answer:

electron gain enthalpy

Explanation:

It can be judged by electron gain enthalpy.

It is because if it gains an electron it is a non metal.

If it is a metal it loses electrons.

Hence it can be judged by electron gain enthalpy

Answer 2

Electronegativity is the answer.

Because ionic Nature gives the metallic properties of element