text: yaar,kal mujhe chemistry ki class mein samajh nahi aaya, woh bonding ka concept itna confusing hai, mujhe toh lagta hai main fail ho jaungi is baar!arey, don’t worry! main tumhe explain kar deti hoon, ek baar samajh lo toh phir sab kuch easy lagne lagega, saath mein practice karenge toh clear ho jayega!