Divalent carbon species called carbenes care capable of fleeting existence. For example, methylene: CH2, is the simplest carbene. The two unshared electrons in methylene can be either spin-paired in a single orbital or unpaired in different orbital. Predict the type of hybridization you expect carbon to adopt in singlet (spin-paired) methylene and triplet (spin-paired) methaylene. Draw a picture of each, and identify the valence orbitals on carbon.