Chemical Bond – Polar and Non-Polar Covalent Bond (3.2)cUnit 3 – 9th Class Chemistry (Punjab Board) скачать в хорошем качестве

Chemical Bond – Polar and Non-Polar Covalent Bond (3.2)cUnit 3 – 9th Class Chemistry (Punjab Board)

A polar covalent bond is formed when two bonded atoms have a difference in electronegativity, causing the shared electrons to be unequally shared. As a result, one atom develops a partial negative charge (δ−) while the other develops a partial positive charge (δ+). A common example is water (H₂O), where oxygen attracts the shared electrons more strongly than hydrogen, making the molecule polar. A non-polar covalent bond is formed when atoms have equal or nearly equal electronegativity, so the shared electrons are equally shared between them. In such bonds, no partial charges develop. Examples include hydrogen (H₂) and oxygen (O₂) molecules. In Unit 3, Topic 3.2(c) of 9th Class Chemistry (Punjab Board), students learn how electronegativity difference determines whether a covalent bond is polar or non-polar, and how bond polarity influences the physical and chemical properties of substances such as solubility and boiling point. #PolarCovalentBond #NonPolarCovalentBond #ChemicalBond #Electronegativity #ElectronSharing #Unit3Chemistry #Class9Chemistry #PunjabBoard #BasicChemistry #MolecularPolarity