35  Bromine

 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      

+--------------------+
| 35  ____           |
|    | __ ) _ __     |
|    |  _ \| '__|    |
|    | |_) | |       |
|    |____/|_|       |
|                    |
|       Bromine      |
|       79.90 u      |
+--------------------+

Electron Configuration: [Ar]4s2 3d10 4p5
Electronegativity:      2.96
Atomic Radius:          183 pm
Ionization Energy:      11.814 eV
Electron Affinity:      3.365 eV
Oxidation States:       +5, +1, -1
Standard State:         Liquid
Melting Point:          265.95 K
Boiling Point:          331.95 K
Density:                3.11 g/cm3
Family:                 Halogen
Year Discovered:        1826
Number of Neutrons:     45
Number of Protons:      35
Number of Electrons:    35
Number of Valence:      7
Valency:                1
Group:                  17
Period:                 4
Shell:                  p-shell
Specific Heat:          0.474 J/g K
Radioactive:            0
Occurrence:             Natural
Source:                 Dying high-mass stars