Chemistry 9701 · AS & A Level · The Periodic Table: chemical periodicity

The Periodic Table: chemical periodicity — practice question

The fifth to eighth ionisation energies of four elements in Period $3$ of the Periodic Table are shown. Which row corresponds to chlorine?

  • Afifth $= 6280$, sixth $= 21200$, seventh $= 25900$, eighth $= 30500$ $\text{kJ mol}^{-1}$
  • Bfifth $= 6990$, sixth $= 8490$, seventh $= 27100$, eighth $= 31700$ $\text{kJ mol}^{-1}$
  • Cfifth $= 6540$, sixth $= 9330$, seventh $= 11000$, eighth $= 33600$ $\text{kJ mol}^{-1}$
  • Dfifth $= 7240$, sixth $= 8790$, seventh $= 12000$, eighth $= 13800$ $\text{kJ mol}^{-1}$

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