Summary

Charge-neutral

• Nitric oxide (NO), nitrogen(II) oxide, or nitrogen monoxide
• Nitrogen dioxide (NO₂), nitrogen(IV) oxide
• Nitrogen trioxide (NO₃), or nitrate radical
• Nitrous oxide (N₂O), nitrogen(0,II) oxide
• Dinitrogen dioxide (N₂O₂), nitrogen(II) oxide dimer
• Dinitrogen trioxide (N₂O₃), nitrogen(II,IV) oxide
• Dinitrogen tetroxide (N₂O₄), nitrogen(IV) oxide dimer
• Dinitrogen pentoxide (N₂O₅), nitrogen(V) oxide, or nitronium nitrate [NO₂]⁺[NO₃]⁻
• Nitrosylazide (N₄O), nitrogen(−I,0,I,II) oxide
• Oxatetrazole (N₄O)
• Trinitramide (N(NO₂)₃ or N₄O₆), nitrogen(0,IV) oxide

Anions

• Nitroxide (NO⁻)
• Nitrite (NO⁻
  ₂)
• Nitrate (NO⁻
  ₃)
• Peroxynitrite (ONO⁻
  ₂)
• Peroxynitrate (ONO⁻
  ₃)
• Orthonitrate (NO³⁻
  ₄)
• Hyponitrite (N
  ₂O²⁻
  ₂)
• Trioxodinitrate (N
  ₂O²⁻
  ₃), or hyponitrate
• Nitroxylate (N
  ₂O⁴⁻
  ₄)
• Dinitramide (N(NO
  ₂)⁻
  ₂ or N
  ₃O⁻
  ₄)

Cations

• Nitrosonium (NO⁺
  )
• Nitronium (NO⁺
  ₂)

Atmospheric sciences

In atmospheric chemistry:

• NO_x (or NOx) refers to the sum of NO and NO₂.^[1][2]
• NO_y (or NOy) = the sum of all oxidized atmospheric odd-nitrogen species (e.g. NO_x + HNO₃ + HNO₂ + etc.)
• NO_z (or NOz) = NO_y − NO_x

• 

  Nitric oxide, NO
• 

  Nitrogen dioxide, NO₂
• 

  Nitrous oxide, N₂O
• 

  Dinitrogen trioxide, N₂O₃
• 

  Dinitrogen tetroxide, N₂O₄
• 

  Dinitrogen pentoxide, N₂O₅
• 

  Trinitramide, N₄O₆

See also

• Nitrate
• Nitrogen oxide sensor
• Sulfur nitrides, which are valence isoelectronic with nitrogen oxides

References