H He
Li Be B C N O [F ]Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
Electron Configuration: [He]2s2 2p5
Electronegativity: 3.98
Atomic Radius: 135 pm
Ionization Energy: 17.423 eV
Electron Affinity: 3.339 eV
Oxidation States: -1
Standard State: Gas
Melting Point: 53.53 K
Boiling Point: 85.03 K
Density: 0.001696 g/cm3
Family: Halogen
Year Discovered: 1670
Number of Neutrons: 10
Number of Protons: 9
Number of Electrons: 9
Number of Valence: 7
Valency: 1
Group: 17
Period: 2
Shell: p-shell
Specific Heat: 0.824 J/g K
Radioactive: 0
Occurrence: Natural
Source: Dying high-mass stars