What is the representative particle for barium chloride?

The chemical formula for the given compound is

Explanation:

Barium chloride is formed by the combination of barium and chlorine atoms. This compound is ionic compound because electrons get transferred from one atom to another atom.

Barium is the 56th element of the periodic table. It is a metal and it looses its electrons. The electronic configuration for this element is

This element will loose 2 electrons and forms ion.

Chlorine is the 17th element of the periodic table. It is a non-metal and it gains electrons. The electronic configuration for this element is

This element will gain 1 electron and forms ion.

Hence, the chemical formula for the given compound is

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

it is the most commonly accepted one