wiz-icon
MyQuestionIcon
MyQuestionIcon
6
You visited us 6 times! Enjoying our articles? Unlock Full Access!
Question

Arrange the compounds in an increasing order of their basic strengths:


A
I>II>III>IV
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
II>I>IV>III
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
II>I>III>IV
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
III>II>I>IV
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B II>I>IV>III
Basic strength Tendency to donate lone pair.
Now,
`I)` Here `'N'` bearing lone pair is sp2 hybridised.
It is more electronegative hence, has less tendency to donate.
`II) `Here `'N'` is very rich in electron density as it is surrounded by 3 +I groups and also it is sp3 hybridised.
It has a good tendency to donate a pair e.
`III)` Lone pair of e on `'N'` are involved in conjugation with 'O' it is a weak base.
`IV)` Here also lp of `'N'` is involved in resonance with the benzene ring.
the availability of 'lp' here is also less. But it is more compared to case `(III)` as in case `(III)` extent of delocalisation is more.
So, the correct order of basic strength is:
II>I>IV>III

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Chemical Reactions of Amines
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon