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"
"Doctor, are you sure I''m suffering from pneumonia? I''ve heard once about a doctor treating someone with pneumonia and finally he died of typhus."
"Don''t worry, it won''t happen to you. If I treat someone with pneumonia he will die of pneumonia only." . . . ;->