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

The Periodic Table: chemical periodicity — practice question

Sodium and sulfur combine to produce sodium sulfide, $\text{Na}_2\text{S}$. How does the atomic radius of sodium compare with that of sulfur, and how does the ionic radius of sodium compare with that of sulfur?

  • Aatomic radius: sodium $>$ sulfur; ionic radius: sodium $>$ sulfur
  • Batomic radius: sodium $>$ sulfur; ionic radius: sodium $<$ sulfur
  • Catomic radius: sodium $<$ sulfur; ionic radius: sodium $>$ sulfur
  • Datomic radius: sodium $<$ sulfur; ionic radius: sodium $<$ sulfur

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