MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade:
        
What is sigma and pie bond along with their diagram and orbital picture.
6 months ago

Answers : (1)

Arun
21013 Points
							
Sigma bond: A covalent bond resulting from the formation of a molecular orbital by the end-to-end overlap of atomic orbitals, denoted by the symbol σ.
 
Pi bond: A covalent bond resulting from the formation of a molecular orbital by side-to-side overlap of atomic orbitals along a plane perpendicular to a line connecting the nuclei of the atoms, denoted by the symbol π.
 
Point wise Summary
 

SIGMA BOND

1) The bond formed side to side overlap is called sigma bond.

2) It is always present in single bonded molecules.

3) It is formed between s-s, s-px, s-py, s-pz, px-px overlap.

4) It has low energy and most stability and considered as covalent bond which is property of covalent compounds.

5) It shows no bond resonance or hyperconjugation but don't show resonance.

6) In sigma bond electron pairs are confined between two atoms which makes it localized bonding.

7) Compounds having localized sigma bonding are fully described by a single Lewis structure and their properties such as bond lengths, bond energies & dipole moment can be predicted easily.

8) Sigma bond don't form conjugated systems because all conjugated systems have alternate single and double or triple bonds.

Pi BOND

1) Pi bond is formed due to head to head overlapping of orbitals.

2) It is present in double bonded and triple bonded molecules.

3) Its energy is greater than sigma bond so it is less stable than sigma bond.

4) It is also present in covalent bonded molecules which have double and triple covalent bond.

5) It is formed between py-py and pz-pz overlapping of orbitals.

6) In pi bond one or more electron pairs can move from one atom to another atom which makes it delocalized chemical bonding.

7) It shows resonance but don't show hyperconjugation.

8) Due to resonance it's stability increases and makes compounds stable.

9) Pi bond show the feature of conjugated systems as all conjugated systems have alternate single and double or triple bonds.

6 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 70 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details