Question
Distinguish between a sigma and a pie bond.
✓
Answer
$\sigma$ bond : The covalent bond formed by overlapping on head on or axial overlapping on internuclear axis is known as $\sigma$ bond.
$\pi$ bond : The bond formed by collateral overlapping is known as $\pi$ bond. In this the axis of orbitals are perpendicular to axis and internuclear axis. $\sigma$ bond is stronger than $\pi$ bond as in $\sigma$ bond the degree of overlapping is more than $\pi$ bond strength of bond $\alpha$ extent of overlapping $\pi$ bond always exist with $\sigma$ bond.
$\pi$ bond : The bond formed by collateral overlapping is known as $\pi$ bond. In this the axis of orbitals are perpendicular to axis and internuclear axis. $\sigma$ bond is stronger than $\pi$ bond as in $\sigma$ bond the degree of overlapping is more than $\pi$ bond strength of bond $\alpha$ extent of overlapping $\pi$ bond always exist with $\sigma$ bond.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Assign oxidation number to the underlined elements in the following species:
NaH2PO4
A 5 litre cylinder contained 10 moles of oxygen gas at 27°C. Due to sudden leakage through the hole, all the gas escaped into the atmosphere and the cylinder got empty. If the atmospheric pressure was 1.0atm, calculate the work done by the gas.
[R = 0.0821L atm K-1 mol-1; 1L atm = 101.3J]
[R = 0.0821L atm K-1 mol-1; 1L atm = 101.3J]
Identify the most stable species in the following set of ions giving reasons:
$+\ \ \ \ \ \ +\ \ \ \ \ \ \ \ \ \ +\ \ \ \ \ \ \ \ \ \ \ +\\\text{CH}_3,\ \text{CH}_2\text{Br},\ \text{CH}\ \text{Br}_2,\ \text{C}\ \text{Br}_3$
→$+\ \ \ \ \ \ +\ \ \ \ \ \ \ \ \ \ +\ \ \ \ \ \ \ \ \ \ \ +\\\text{CH}_3,\ \text{CH}_2\text{Br},\ \text{CH}\ \text{Br}_2,\ \text{C}\ \text{Br}_3$
Calculate the number of moles of NaOH in 27cm3 of 0.15M NaOH solution.
One mole of $H _2 O$ and one mole of CO are taken in 10 L vessel and heated to 725 K . At equilibrium $40 \%$ of water (by mass) reacts with CO according to the equation,
$H _2 O ( g )+ CO ( g ) \rightleftharpoons H _2(g)+ CO _2(g)$
Calculate the equilibrium constant for the reaction.
→$H _2 O ( g )+ CO ( g ) \rightleftharpoons H _2(g)+ CO _2(g)$
Calculate the equilibrium constant for the reaction.
The difference between CP and CV can be derived using the empirical relation H = U + pV Calculate the difference between CP and CV for 10 moles of an ideal gas.
What is the basic difference in approach between the Mendeleev's Periodic Law and the Modern Periodic Law?
All Bronsted acids are not Lewis acids. Explain.
Why is potassium a highly reactive metal, whereas gold is a noble metal?