Organic compounds are A. Covalent compounds B. Ionic compounds C. Co-ordination compounds D. Interstitial compounds

The correct answer is A. Covalent compounds.

Organic compounds are covalent compounds, which means that they are held together by covalent bonds. Covalent bonds are formed when atoms share electrons. The electrons are shared equally between the atoms, which makes covalent bonds very strong. Organic compounds are made up of carbon and hydrogen atoms, and they can also contain other elements such as oxygen, nitrogen, and sulfur.

Ionic compounds are held together by ionic bonds. Ionic bonds are formed when one

atom donates an electron to another atom. The atom that donates the electron becomes a positively charged ion, and the atom that receives the electron becomes a negatively charged ion. The positive and negative ions are attracted to each other, which holds the ionic compound together.

Co-ordination compounds are held together by co-ordination bonds. Co-ordination bonds are formed when a metal atom donates electrons to a ligand. The ligand is an atom or molecule that has a lone pair of electrons. The metal atom and the ligand form a co-ordination complex, which is held together by co-ordination bonds.

Interstitial compounds are formed when small atoms are inserted into the spaces between atoms in a crystal. The interstitial atoms are usually atoms of metals, and they are inserted into the spaces between the atoms of a non-metal. The interstitial atoms are held in place by the attraction between their electrons and the nuclei of the atoms in the crystal.