Chemistry 9701 · AS & A Level · Atomic structure

Atomic structure — practice question

Sodium azide, $\text{NaN}_3$, is an explosive that is used to fill airbags in cars during collisions. It is made up of positive sodium ions and negative azide ions. How many electrons are present in the sodium ion and the azide ion?

  • Asodium ion: 10, azide ion: 20
  • Bsodium ion: 10, azide ion: 22
  • Csodium ion: 12, azide ion: 20
  • Dsodium ion: 12, azide ion: 22

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