A-LevelChemistryChemical bonding9701/12 · May/June 2022 · 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

B: identity of J: As, identity of L: N, outer shell electron configuration: s²p³

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Topic: Chemical bonding, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2022 Paper 1 Variant 2, question 6.

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