Multiple choice

In which of the following molecules of compounds is the octet rule violated?

  1. CO2

  2. N2

  3. CO

  4. None of the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The correct answer is choice (3). In a molecule of carbon monoxide (CO), there is a triple bond between carbon and oxygen atoms which comprises of two covalent bonds and one coordinate bond. The octets of carbon and oxygen atoms are not complete.