The outer orbitals of C in ethene molecule can be considered to be hybridized to give three equivalent sp2 orbitals. The total number of sigma (σ) and pi (π) bonds in ethene molecule is
1 sigma (σ) and 2 pi (π) bonds
3 sigma (σ) and 2 pi (π) bonds
4 sigma (σ) and 1 pi (π) bonds
5 sigma (σ) and 1 pi (π) bonds