chemistry question #815

Andrea, a 16 year old female from London asks on June 8, 2002,


In chemistry, how do you know what the formula of a compound is? For example, how do you know if it is AlO, or Al2O2??

viewed 13345 times

the answer

Barry Shell answered on June 10, 2002, A:

It's kind of complicated, but you can find out at places like or

In general the idea is to capture a bit of the structure of the compound in the formula.

Add to or comment on this answer using the form below.
(required if you would like a response)
Note: All submissions are moderated prior to posting.
If you found this answer useful, please consider making a small donation to