The correct electron-dot formulation for hydrogen cyanide shows:

Q. The correct electron-dot formulation for hydrogen cyanide shows:

1. 2 double bonds and two lone pairs of electrons on the N atom.
2. 1 C-H bond, 1 C=N bond, 1 lone pair of electrons on the C atom and 1 lone pair of electrons on the N atom.
3. 1 C-H bond, 1 C-N bond, 2 lone pairs of electrons on the C atom and 3 lone pairs of electrons on the N atom.
4. 1 triple bond between C and N, 1 N-H bond and 2 lone pairs of electrons on the C atom.
5. 1 triple bond between C and N, 1 C-H bond and 1 lone pair of electrons on the N atom.

Answer: 1 triple bond between C and N, 1 C-H bond and 1 lone pair of electrons on the N atom.