Periodic Table of the Elements

   

Groups:

Periods: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 H He
2 Li Be B C N O F Ne
3 Na Mg Al Si P S Cl Ar
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6 Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
7 Fr Ra Ac** Unq Unp Unh Uns Uno Une
 
Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu  
Actinides** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
Name Number Atomic Weight (a.m.u.)
Melts (Degree Celsius) Boils (Degree Celsius)

Legend
Metals A solid substance that is a good conductor of heat and electricity. Can be formed into many shapes.
Metalloid "Middle elements" - conduct heat and electricity better than nonmetals, but not as well as metals. Easier to shape than nonmetals, but not as easy as metals. Solid at room temperature.
Nonmetals A poor conductor of heat and electricity. Not easily formed into shapes.
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