A-LevelChemistryChemical bondingFeb/Mar 2022Paper 1 Q51 Mark
Which dot-and-cross diagram is correct for Al₂Cl₆? [Figure 5.1]
ADiagram showing two separate Al³⁺ ions and six Cl⁻ ions.
BDiagram showing a dimeric Al₂Cl₆ molecule with two bridging chlorine atoms, all atoms having complete octets where applicable.
CDiagram showing a dimeric Al₂Cl₆ molecule but with incorrect electron arrangement around some chlorine atoms.
DDiagram showing a dimeric Al₂Cl₆ molecule but with incorrect electron arrangement and bonding.
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The correct answer is B. This question tests the candidate's understanding of chemical bonding within the Chemistrysyllabus. The examiner's mark scheme requires...
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