Now, the molecular formula is ch four. This can be represented another way using the following diagram. So, the carbon central atom is attached to four identical H atoms in the following manner, where each bond is a covalent bond and each bond is SP three hybridized. Now, what happens, for example, if we take away this H atom and along with the H atom, we take away one electron and we leave one electron on this molecule. Now, let's suppose I take two of such molecules and I interact them in such a way so that I form the following compound. So, these two electrons interact to form a covalent SP three hybridized bond, and I form a compound with two carbons.