A-LevelChemistryChemical bondingMay/June 2022Paper 1 Q61 Mark
Elements J and L are both in Group 15. J and L each form a gaseous covalent hydride in which their oxidation number is –3. In the liquefied forms of these hydrides, significant hydrogen bonding occurs only in the hydride of L. Which row about J and L could be correct?
Aidentity of J: As, identity of L: N, outer shell electron configuration: p⁵
Bidentity of J: As, identity of L: N, outer shell electron configuration: s²p³
Cidentity of J: N, identity of L: As, outer shell electron configuration: p⁵
Didentity of J: N, identity of L: As, outer shell electron configuration: s²p³
✓ Correct Answer
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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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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