Chemistry 9701 · AS & A Level · Chemical bonding

Chemical bonding — practice question

Dicarbon monoxide, $\text{C}_2\text{O}$, occurs in dust clouds in space. This molecule has the structure $\text{C} \equiv \text{C} = \text{O}$. It has no unpaired electrons. What is the number of lone pairs of electrons in one molecule of $\text{C}_2\text{O}$?

  • A1
  • B2
  • C3
  • D4

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