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Assertion : sigma-bond is strong white p...

Assertion : `sigma`-bond is strong white `pi` -bond is a weak bond.
Reason :Atomic rotate freely about `pi`-bond.

A

Both A and R true and R is the correct explanation of A

B

Both A and R true and R is not a correct explanation of A

C

A is true but R is false

D

A is false but R is true

Text Solution

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The correct Answer is:
C
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Sigma bond is stronger than the pi bond. Explain.

A covalent bond will be formed by the overlapping of atomic orbitals having single electron of opposite spin, according to the overlapping of atomic orbitals the covalent bond may be of two types : (i) Sigma bond (sigma) " " (ii) Pi bond (pi) Sigma bond is stronger bond than the Pi-bond. If atomic orbitals overlap about the nuclear axis then sigma bond is formed but when atomic orbitals overlap sideway then Pi-bond is formed. Compound having maximum bond angle is :

Sigma Bond And Pi Bond

A covalent bond will be formed by the overlapping of atomic orbitals having single electron of opposite spin, according to the overlapping of atomic orbitals the covalent bond may be of two types : (i) Sigma bond (sigma) " " (ii) Pi bond (pi) Sigma bond is stronger bond than the Pi-bond. If atomic orbitals overlap about the nuclear axis then sigma bond is formed but when atomic orbitals overlap sideway then Pi-bond is formed. The strength of bonds formed by 2s-2s,2p-2p and 2p-2s overlap has the order :

A covalent bond will be formed by the overlapping of atomic orbitals having single electron of opposite spin, according to the overlapping of atomic orbitals the covalent bond may be of two types : (i) Sigma bond (sigma) " " (ii) Pi bond (pi) Sigma bond is stronger bond than the Pi-bond. If atomic orbitals overlap about the nuclear axis then sigma bond is formed but when atomic orbitals overlap sideway then Pi-bond is formed. The correct order of increasing C-O bond length of CO,CO_(3)^(2-),CO_(2) is :

DINESH PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Reason Assertion
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