Question

Give relative stability​

Answer 1

III>I>II

reason

1)III,have higher moleculer mass,so it have more stability

2)I,have alkyl group closer to the other ring,so that it can also form weak bond with another ring...

so it will be at the second position

Answer 2

Answer:

3>1>2

Explanation:

• See in the first figure where -Ch+ group attatched with benzene can do resonance.
• Resonance is done by ( π sigma Cation ) concept. If you don't know please search it on google.
• Now coming to second figure, It has -CH+ group present but it cannot do resonance
• In the third figure , The benzene is attached with -CH+ group ,
• Now you might be thinking what is the difference between 1 & 3 rd figure.
• The difference is that in the third figure CH+ group is attatched with CH3 group which provides + I effect.
• Thus, in third figure Resonance can be carried out easier.

Therefore, final answer is 3 >1 > 2

HOPE IT HELPS .