# Question #3a761

##### 1 Answer

The molecular formula of Aluminium Hydroxide is

#### Explanation:

To get this one needs to know the valencies for the two respective constituents.

The hydroxide ion (

So therefore, because

So you find the lowest common multiple (LCM) of the two, which is 3, so thus you have to multiply the -1 of the hydroxide ion to get -3.

Thus the formula is

*+3 of Aluminium -3 of the Hydroxide due to multiplication of -1 with 3, gives you a total of 0, which indicates compound is stable.

Hope I helped :)