What is the C-hybridization of C2H2?

Answer 1

Hybridisation is given by the formula:

H=1/2{ V + X - C + A}

V=no of valence electrons in central atom

X=no of monovalent atoms around the central atom

C= +ve charge on cation

A= -ve charge on anion

C2H2 is ethyne and the structure is a triple bond between te carbon atoms then each hydrogen is bonded to one of the carbons. So it looks like H-C[tb]C-H ([tb] denotes triple bond). The hybridization for each of the carbon atoms is sp.

Answer 2

The carbon atoms in C2H2 undergo sp hybridization. This means that each carbon atom forms two sp hybrid orbitals, which form sigma bonds with hydrogen atoms, and two unhybridized p orbitals, which form pi bonds between the carbon atoms.