C-1 : never break a single bond while drawing a resonance structure.
C-2 : never exceed the octet of a second-period atom (C, N, O).
For the curved-arrow move described below, which statement is correct ?
In CH₃CH₂CH₂-C≡N the C≡N pi electrons are pushed onto nitrogen as a lone pair.

Question

C-1 : never break a single bond while drawing a resonance structure.

C-2 : never exceed the octet of a second-period atom (C, N, O).

For the curved-arrow move described below, which statement is correct ?

structure

In CH₃CH₂CH₂-C≡N the C≡N pi electrons are pushed onto nitrogen as a lone pair.

TestHub · Accepted Answer

The pi pair becomes a lone pair on nitrogen, which then has a double bond to carbon and one lone pair (valid octet). No violation.

Chemistry - GOC Question with Solution | TestHub