# What is the lewis structure of N(CH_3)_3?

And carbon has 4 valence electrons all of which are involved in bonding. There are 5 valence electrons on nitrogen; less the 3 bonding electrons, this leaves 2 electrons as a stereochemically active, nitrogen-centred lone pair. The electronic structure around nitrogen is tetrahedral; the molecular structure around nitrogen is trigonal pyramidal, $\angle H - N - H \cong {105}^{\circ}$.