A-LevelChemistryChemical periodicity9701/12 · May/June 2023 · Q171 Mark

L, M and N are three different elements from Period 3 of the Periodic Table. L is the element whose atoms have three unpaired electrons in its 3p sub-shell. M is the element with the highest electrical conductivity in the period. N is the element with the highest melting point in the period. Which statement about element L is correct?

AL has a higher atomic number than M and a lower atomic number than N.

BL has a lower atomic number than M and a higher atomic number than N.

CL has a lower atomic number than both M and N.

DL has a higher atomic number than both M and N.

✓ Correct answer

D: L has a higher atomic number than both M and N.

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Topic: Chemical periodicity, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2023 Paper 1 Variant 2, question 17.

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