49  Indium

 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      

+--------------------+
| 49   ___           |
|     |_ _|_ __      |
|      | || '_ \     |
|      | || | | |    |
|     |___|_| |_|    |
|                    |
|       Indium       |
|      114.818 u     |
+--------------------+

Electron Configuration: [Kr]5s2 4d10 5p1
Electronegativity:      1.78
Atomic Radius:          193 pm
Ionization Energy:      5.786 eV
Electron Affinity:      0.3 eV
Oxidation States:       3
Standard State:         Solid
Melting Point:          429.75 K
Boiling Point:          2345 K
Density:                7.31 g/cm3
Family:                 Post-transition metal
Year Discovered:        1863
Number of Neutrons:     66
Number of Protons:      49
Number of Electrons:    49
Number of Valence:      3
Valency:                3
Group:                  13
Period:                 5
Shell:                  p-shell
Specific Heat:          0.233 J/g K
Radioactive:            0
Occurrence:             Natural
Source:                 Merging neutron stars