What is a inorganic compond?

Answer 1

An inorganic molecule is a substance that does not contain carbon; they are not normally found in living things.

Actually, there are plenty of inorganic compounds in living things. But yes, as the name implies, inorganic chemistry is that chemistry that is not organic chemistry - the chemistry of carbon.

A compound that contains no carbon.

EDIT: Note that cyanide (CN), carbon monoxide and dioxide (CO, CO2), Carbonate (CO3^2-) etc. all contain carbon, but are not considered organic molecules. They are classed as inorganic. When classifying organic compounds, look for the presence of a carbon-hydrogen bond (C-H) in addition to just the presence of carbon.

Answer 2

Anything containing a metal and/or anything without carbon

Answer 3

Inorganic compounds are traditionally considered compounds without carbon; but this definition has exceptions, it is not so rigorous.