A-LevelChemistryAtomic structure9701/12 · May/June 2020 · Q121 Mark
The fifth to eighth ionisation energies of four elements in Period 3 of the Periodic Table are shown. Which row refers to chlorine? ionisation energies/kJ mol⁻¹ fifth sixth seventh eighth 6280 21 200 25 900 30 500 6990 8490 27 100 31 700 6540 9330 11 000 33 600 7240 8790 12 000 13 800
A6280 21200 25900 30500
B6990 8490 27100 31700
C6540 9330 11000 33600
D7240 8790 12000 13800
✓ Correct answer
C: 6540 9330 11000 33600
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