Question

Put the following C-H bonds in order of which one would lead to the most stable radical. If the C-H bond forms a more stable radical, then the bond strength will be weaker.

5) Put the following C-H bonds in order of which one would lead to the most stable radical. If the C-H bond forms a more stable radical, then the bond strength will be weaker. HE most stable radical weakest C-H bond least stable radical strongest C-H bond Ho

Answer 1

HB 1 If HA removes then the radical will be I radical but benzylic so it is stabilised by mear by benzene sing with resonance effect. when HB remores, - 30 radical as well as benzylic and stabilised by three benzene rings so more stable radical When He removes, zo radical, benzylic and also have 6 hyper conjugation stability so this is also stable. |ть НЬ Хому, 2 radical, benzylic and also have 2 hyper conjugative structure. bio

. If He removes, 20 radical, not benzylic, having 4 hyperconjugature structure. If He removes, po radical, not benzylic only a hyper conjugation structure so less stable. stability order : 3° radical > 2-radical > Lo radical we know, between resonance and hyperconjugation , resonance has greater effect or contribution towards stability so, the stability order of radicals HB > Hc> HD SHAXHEHF. and C-H bond stability follow the reverse of radical Stability because stable radical will generate it C-H bond. becomes weak.