smc-4258-50-Chemical structure

CHEMISTRY, M1 2008 HSC 18a

Draw Lewis electron dot structures for oxygen and ozone . (2 marks)

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Oxygen Ozone

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Oxygen Ozone

Which of the following does NOT represent the formation of a coordinate covalent bond?

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→ A coordinate covalent bond occurs when one atom donates a pair of electrons (both electrons) to form the covalent bond.

→ In both atoms donate 1 electron each, therefore it is not a coordinate covalent bond.

Which of the following diagrams best represents the bonding between molecules of water and ethanol?

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→ Ethanol, has a polar group. The partially negative oxygen atom is attracted to the partially positive hydrogen atom in the water molecule.

→ This forms a hydrogen bond.