Question

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
(a) 1 sigma (σ) and 2 pi (π) bonds
(b) 3 sigma (σ) and 2 pi (π) bonds
(c) 4 sigma (σ) and 1 pi (π) bonds
(d) 5 sigma (σ) and 1 pi (π) bonds

Answer 1

5 sigma and 1 pi bonds answer

Answer 2

Answer:

5 sigma (s) and 1 pi (p) bonds

Explanation:

According to valence bond theory, two atoms form a covalent bond through the overlap of individual half-filled valence atomic orbitals, each containing one unpaired electron. In ethene, each hydrogen atom has one unpaired electron and each carbon is sp² hybridized with one electron each sp² orbital. The fourth electron is in the p orbital that will form the pi bond. The bond order for ethene is simply the number of bonds between each atom: the carbon-carbon bond has a bond order of two, and each carbon-hydrogen bond has a bond order of one.