14  Silicon

 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      

+--------------------+
| 14    ____  _      |
|      / ___|(_)     |
|      \___ \| |     |
|       ___) | |     |
|      |____/|_|     |
|                    |
|       Silicon      |
|      28.085 u      |
+--------------------+

Electron Configuration: [Ne]3s2 3p2
Electronegativity:      1.9
Atomic Radius:          210 pm
Ionization Energy:      8.152 eV
Electron Affinity:      1.385 eV
Oxidation States:       +4, +2, -4
Standard State:         Solid
Melting Point:          1687 K
Boiling Point:          3538 K
Density:                2.3296 g/cm3
Family:                 Metalloid
Year Discovered:        1854
Number of Neutrons:     14
Number of Protons:      14
Number of Electrons:    14
Number of Valence:      4
Valency:                4
Group:                  14
Period:                 3
Shell:                  p-shell
Specific Heat:          0.705 J/g K
Radioactive:            0
Occurrence:             Natural
Source:                 Dying high-mass stars