smc-4258-50-Chemical structure

CHEMISTRY, M1 2008 HSC 18a

Draw Lewis electron dot structures for oxygen \( (\ce{O})\) and ozone \( (\ce{O3}) \). (2 marks)

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Oxygen \((\ce{O})\) Ozone \((\ce{O3}) \)

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Oxygen \((\ce{O})\) Ozone \((\ce{O3}) \)

CHEMISTRY, M1 2014 HSC 11 MC

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

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`A`

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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 \(A\) both atoms donate 1 electron each, therefore it is not a coordinate covalent bond.

`=>A`

CHEMISTRY, M1 2016 HSC 5 MC

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

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`B`

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→ Ethanol, \(\ce{C2H5OH}\) has a polar \(\ce{OH}\) group. The partially negative oxygen atom is attracted to the partially positive hydrogen atom in the water molecule.

→ This forms a hydrogen bond.

`=>B`