Arrangement of the Periodic Table
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Arrangement of the Periodic Table


In this section we will discuss some of the basic terminology related to the arrangement of elements on the periodic table. You should get your periodic table from example 1 in your workbook and use it to take notes from this and the other pages in this section.

Periodic Table
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                              
  * 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

Take a look at example 1 in your workbook now. It contains more information than the one shown above on the screen. In most periodic tables at least two numbers are shown in the box for each element, as shown to the right. There will be the atomic number and also the atomic weight. In this periodic table the atomic number is shown in the upper left-hand corner and the atomic weight is shown below the symbol for the element.
atomic number wpe2.gif (851 bytes)
atomic symbol wpe3.gif (851 bytes)
atomic weight wpe4.gif (851 bytes)

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