# What is the process by which nitrogen gas is converted to nitrate - the form of nitrogen that plants can use?

${N}_{2} \left(g\right) + 6 {H}_{2} O \rightarrow 2 N {O}_{3}^{-} + 12 {H}^{+} + 10 {e}^{-}$
Zerovalent dinitrogen gas is oxidized to ${N}^{V +}$. This is the process of dinitrogen fixation. A few model systems now exist that model the (reduction to ammonia) process convincingly.