Organic compounds will always have carbon as a key element.

Here's why:

* Definition of Organic Chemistry: Organic chemistry is the study of compounds containing carbon.

* Carbon's Bonding Abilities: Carbon has a unique ability to form four covalent bonds with other atoms. This allows it to create long chains, branched structures, and rings, leading to an incredible diversity of organic molecules.

* Exceptions: While carbon is the defining element, there are a few exceptions. Some simple compounds containing carbon, like carbon dioxide (CO2) and carbonates, are considered inorganic.

So, while there might be some exceptions, the presence of carbon is the defining characteristic of organic compounds.