Peroxide effect is spontaneous with HBr only. Why?

1.	Peroxide effect is spontaneous with HBr only. Why?
Answer» ANSWER: according to this rule the be ATOM will JOIN to that carbon atom which carries more hydrogen atoms while the H atom will GO to other carbon atom

Answer»

according to this rule the be ATOM will JOIN to that carbon atom which carries more hydrogen atoms while the H atom will GO to other carbon atom

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