# Does hybridization take place in other atoms apart from central atom in a molecule?

I have seen my textbooks always give formula and description of hybridization of central atom of a molecule. But I wonder will other atoms present (not Hydrogen) go in hybridization or only the central atom only uses hybrid orbital and other use pure orbital?

Yes, all atoms with p or d orbitals can hybridize in a molecule, not just the central atom. Take acetone for example, the carbonyl carbon is $\ce{sp^2}$ hybridized and the carbonyl oxygen is also $\ce{sp^2}$ hybridized. Another example is methyl chloride, the methyl carbon is $\ce{sp^3}$ hybridized and the chlorine is also $\ce{sp^3}$ hybridized. As a final example consider dimethyl ether, each of the carbon atoms is $\ce{sp^3}$ hybridized and the central oxygen is also $\ce{sp^3}$ hybridized.
• For your first question, the answer is "yes" when we are talking about orbitals that 1) contain electrons and 2) are used to form bonds. For your second question, look at the various bond angles (including those involving hydrogen) around the atom in question. From this information you can infer hybridization. For example, if the angles around an atom are all 120 degrees, then the atom is $\ce{sp^2}$ hybridized. See my answer here for a more detailed example chemistry.stackexchange.com/questions/10653/… – ron Jun 29 '14 at 13:03