38  Strontium

 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      

+--------------------+
| 38  ____           |
|    / ___| _ __     |
|    \___ \| '__|    |
|     ___) | |       |
|    |____/|_|       |
|                    |
|      Strontium     |
|       87.62 u      |
+--------------------+

Electron Configuration: [Kr]5s2
Electronegativity:      0.95
Atomic Radius:          249 pm
Ionization Energy:      5.695 eV
Electron Affinity:      
Oxidation States:       2
Standard State:         Solid
Melting Point:          1050 K
Boiling Point:          1655 K
Density:                2.64 g/cm3
Family:                 Alkaline earth metal
Year Discovered:        1790
Number of Neutrons:     50
Number of Protons:      38
Number of Electrons:    38
Number of Valence:      2
Valency:                2
Group:                  2
Period:                 5
Shell:                  s-shell
Specific Heat:          0.301 J/g K
Radioactive:            0
Occurrence:             Natural
Source:                 Dying low-mass stars