How do u balance the chemical equation kcio3 kci+02

We start with

1KClO3→KCl+O2

Balance K :

We have 1 K on the left, so we need 1 K on the right. We put a 1 in front of the KCl .

1KClO3→1KCl+O2

Balance Cl :

Cl is already balanced, with 1 Cl on each side.

Balance O :

We have 3 O atoms on the left and only 2 on the right. We need 1½ O2 molecules on the right. Uh, oh! Fractions!

We start over with a 2 as the coefficient.

2KClO3→2KCl+O2

Now we have 6 O atoms on the left. To get 6 O atoms on the right, we put a 3 in front of the O2 .

2KClO3→2KCl+3O2

Every formula now has a fixed coefficient. We now should have a balanced equation.

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.