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

The Periodic Table: chemical periodicity — practice question

Z is a compound made from the two elements X and Y. For element X, there is a very large jump between its 5th and 6th ionisation energies. It has the second largest 1st ionisation energy in its group. For element Y, there is a very large jump between its 6th and 7th ionisation energies. It has the largest 1st ionisation energy in its group. Which compound is Z?

  • A$\text{NO}_2$
  • B$\text{PCl}_5$
  • C$\text{P}_4\text{O}_{10}$
  • D$\text{SF}_6$

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