All da elecTrons were having parTY suddenly proTons aTTacked ThemA herO came & saved da eLecTrons.TheY asKed hero "who r u?"he said "Bond .....Covalent bond"
Teacher to Student: Beta Jo cheez b apko tang ya pareshan karey usey apne pass b bhatakne na do... . . . . . Student: Chal beta sabse pehle to tu nikal.