Contrast the bonds that are formed from diatomic chlorine and diatomic oxygen.

Answer;

Chlorine forms one covalent bond and oxygen forms two covalent bonds

Explanation;Covalent bond is a type of bond the occur when non-metal  atoms share electrons. Covalent atom may occur between two atoms in a molecule. Diatomic molecule is a molecule consisting of two atoms. Halogens such as chlorine exist as diatomic gases by forming covalent bonds.Single covalent bond occurs when two atoms held together by sharing a pair of electrons, for example in diatomic molecules such as chlorine.Double covalent bond is a bond that involves two shared pairs of electrons for example in oxygen molecule. Triple covalent bond on the other hand is a bond formed by sharing three pairs of electrons between atoms, like in the case of nitrogen molecule.