Write and balance the equation for the decomposition of aluminum chloride into its elements. Phase symbols are optional

Answer is in picture

Explanation:

A balanced equation is an equation in which number of molecules on both left and right side are the same or equal.

When aluminium chloride decomposes then it gives aluminium and chlorine gas.

The decomposition reaction will be as follows.

Therefore, we can see that number of molecules on the reactant and product side are same. Hence, this equation is balanced.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.