Distinguish between a sigma bond and a pi bond.

1.	Distinguish between a sigma bond and a pi bond.
Answer» Sigma (σ) Bond 1. σ – bond is formed by the axial overlap of the atomic orbitals. 2. The bond is quite strong. 3. Only one lobe of the p-orbitals is involved in the overlap. 4. Electron cloud of the molecular orbital is symmetrical around the inter-nuclear axis. Pi (π) Bond 1. π – bond is formed by the sidewise overlap of atomic orbitals 2. It is comparatively a weaker bond. 3. Both lobes of the p-orbitals are involved in the overlap. 4. The electron cloud is not symmetrical.

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Sigma (σ) Bond

1. σ – bond is formed by the axial overlap of the atomic orbitals.

2. The bond is quite strong.

3. Only one lobe of the p-orbitals is involved in the overlap.

4. Electron cloud of the molecular orbital is symmetrical around the inter-nuclear axis.

Pi (π) Bond

1. π – bond is formed by the sidewise overlap of atomic orbitals

2. It is comparatively a weaker bond.

3. Both lobes of the p-orbitals are involved in the overlap.

4. The electron cloud is not symmetrical.

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