Atomic Element Z = 7 • Reactive Nonmetal

Nitrogen (N) — Atomic Data, Electron Shells & Reactions

Nitrogen (symbol N, atomic number 7) has a standard atomic weight of 14.007 u and ground-state configuration [He] 2s2 2p3.

← 6 C Full Atlas 8 O →

IUPAC Physical & Atomic Properties

Atomic Number (Z) 7 IUPAC Symbol N Standard Atomic Weight 14.007 g/mol Period / Group / Block 2 / 15 / p-block Condensed Electron Config [He] 2s2 2p3 Full Subshell Config 1s2 2s2 2p3 Principal Shell Occupancy [2, 5] Pauling Electronegativity 3.04 First Ionization Energy 1402 kJ/mol Covalent Radius 71 pm Melting Point 63.15 K (-210.00 °C) Boiling Point 77.36 K (-195.79 °C) Density 0.001251 g/cm³ Oxidation States +5, +3, -3

Bohr Shell Diagram & Balanced Reactions

N (Z=7) — Valence shell highlighted in vermilion

Interactive Stoichiometry Reactions Involving Nitrogen:

Cu + HNO3 -> Cu(NO3)2 + NO + H2O N2 + H2 -> NH3 K4[Fe(CN)6] + H2SO4 + H2O -> K2SO4 + FeSO4 + (NH4)2SO4 + CO NH3 + O2 -> NO + H2O Pb(NO3)2 + KI -> PbI2 + KNO3 AgNO3 + CaCl2 -> AgCl + Ca(NO3)2