How many hydrogen atoms are in representative particle of each substance? Al (OH) 3

There are 3 hydrogen atoms in the representative particle of Al (OH) ₃

Explanation:

Al (OH) ₃ is the chemical formula for the representative particle of aluminum hydroxide.

Since Al (aluminum) has not any subscript associated, it is understood that there is 1 atom of aluminum in each representative particle of Al (OH) ₃.

Since the subscript 3 is after a parenthesis, it affects all the atoms that are inside such parenthesis. This leads to:

- there are 3 atoms of oxygen in each representative particle of Al (OH) ₃, and

- there are 3 atoms of hydrogen in each representative particle of Al (OH) ₃.