0

Guest

Courses New

Which benzoids have highest resonance energy? Benzene, naphthalene, anthracene, phenanthrene

Which benzoids have highest resonance energy?
Benzene, naphthalene, anthracene, phenanthrene
 

Question Image
Grade:12

2 Answers

Vishakha Singh
14 Points
4 years ago
Phenanthrene has the highest resonance energy among the given benzanoids i.e among benzene, naphthalein,  anthracene, and phenanthrene
Vikas TU
14149 Points
4 years ago
Dear student 
The resonance energy for phenanthrene is 92 Kcal/mol, that for anthracene is 84 Kcal/mol and for naphthalene and benzene rings are 61 and 36 Kcal/mol respectively.
Here resonance energy per benzene ring decreases from 36 Kcal/mol for benzene to 30.5 Kcal/mol for naphthalene, 30.3 Kcal/mol for phenanthene and 28 Kcal/mol for anthracene.
Hence, order of stability (or RE): Benzene > Phenanthrene ~ Naphthalene > Anthracene. In fact other fused polycyclic aromatic hydrocarbons react faster than benzene.

Think You Can Provide A Better Answer ?

Other Related Questions on Organic Chemistry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More