State the general formular of.

Alkane
Alkena
Alkyne
2.define functional group

1. The general formula for alkane is CnH2n+2, where n represents the number of carbon atoms in the molecule.

2. The general formula for alkene is CnH2n, where n represents the number of carbon atoms in the molecule.

3. The general formula for alkyne is CnH2n-2, where n represents the number of carbon atoms in the molecule.

Functional group: A functional group is a specific group of atoms within a molecule that is responsible for the characteristic chemical reactions of that molecule. It is a specific arrangement of atoms that determines the chemical properties and reactivity of a compound. Functional groups can be found in organic compounds and play a key role in determining the structure and properties of the molecule.