Amr mone hoy ii and iii hobe. Al er jaron man to +3. Amader chemistry boi er 97 page er first line ta dekhun. Ekhane Al er ayonik bondhon ke jur dise. I think Ayonik hote pare. HSC te hoyo details bolse tai somojuji hobe. But I think ssc er jonno ayonik tai better hobe. Confusion ekta thekei gelo