Sugar is a covalent compound. This means that the bonds between the atoms in sugar are covalent bonds. Covalent bonds occur when atoms share electrons to achieve a stable electron configuration.
In the case of sugar, which is typically composed of carbon, hydrogen, and oxygen atoms, these atoms share electrons to form covalent bonds. For example, in glucose (a common sugar), each carbon atom forms covalent bonds with hydrogen and oxygen atoms. The sharing of electrons allows each atom to fill its outer electron shell, making the molecule stable.
Unlike ionic bonds, which involve the transfer of electrons from one atom to another, covalent bonds involve a mutual sharing of electrons. This is why sugar, like many organic compounds, is held together by covalent bonds rather than ionic bonds.