Asksionov thought of killing himself because he remembered all those harsh situations that he had faced in his life without committing any crime . Even his wife didn't  believe in him . He got frustrated by thinking all these painful situations that he was ready to kill himself.

Its all because of oxytocin. Oxytocin is the love hormone that activates feelings of trust and love between people when it is released in the brain. Whenever Surakshya thinks of her college the production of the oxytocin hormone rises to peak but sadly she cannot express her love in anyway. Because of the fact she is miles away from her college and she is bound to accept the truth that she cannot be there in college at the present time. So, there is no way that she can express her love,...

Makar disclosed that he had killed the merchant because he realized his mistake and Aksionov's suffering and now he wanted to make Aksionov release from the prison.

II)Cr2+ is reducing agent as its configuration changes from d4 to d3, when it is oxidized to Cr3+ .The d3 configuration have a half-filled t2g level which is very stable. On the other hand, the reduction of Mn3+ to Mn2+ results in the half-filled (d5) configuration which has extra stability hence Mn3+ acts as oxidizing agent.