Which of the following are ways radiation is used?
Check all that apply.
A. As part of a doctor's tests for a patient
B. To determine how long ago a buried animal lived
C. As paint for a wall in a home
D. To flavor food

Explanation:

A substance is able to conduct electricity if it has or contains free electrons.

This also means that larger is the atomic radius of a metal lesser will the force of attraction between its nucleus and valence electrons. As a result, it can easily lose its valence electrons.

Therefore, availability of free electrons is easy in that case.

Also, more is the number of valence electrons a metal contains more is the number of electrons participating in conducting electricity.

Thus, we can conclude that a combination of more valence electrons and larger atomic radius factors is most suitable for increasing the electrical conductivity of metals.