Doubt from stabilities

Question no 1,2nd part and question no 4 with explanation 15720235744256480512404833198381 1572023619859450960860851268704

For 1 b ) 3>1>2
4) 1>2>3>4

Are these answers correct?!

Yes i want proper explanation

1 b )
-ve charge is stabilised by -I and -m effect

Compound 1 - resonance stabilised
Compound 2 - nothing as such ( altough +I present )
Compund 3- resonance + -I of fluorine

And hence 3>1>2

1 Like

Q4
First see—As no of pie bond increases , stability increases
Then see— as charge separation between opposite charge increases stability decreases
— -ve charge on more electronegative element of more stable
Comp1 — 1 pie bond + no charge sep
Comp2 — 1 pie bond + charge separation
Comp3 — 0 pie bond + -ve charge on O
Comp4 — 0 pie bond + -ve charge on C

1 Like

Whenever you need to compare stability of different resonating structure of a compound follow this
image

2 Likes