Difference between revisions of "Periodic table of the elements"
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| Line 23: | Line 23: | ||
|{{ptc|2|He|Helium|4.003|gold}} | |{{ptc|2|He|Helium|4.003|gold}} | ||
|- | |- | ||
| − | |{{ptc|3|Li|Lithium|6.939 | + | |{{ptc|3|Li|Lithium|6.939}} |
| − | |{{ptc|4|Be|Beryllium|9.0122 | + | |{{ptc|4|Be|Beryllium|9.0122}} |
||||||||||||||||||| | ||||||||||||||||||| | ||
|{{ptc|5|B|Boron|10.811|#bbbbff}} | |{{ptc|5|B|Boron|10.811|#bbbbff}} | ||
| Line 33: | Line 33: | ||
|{{ptc|10|Ne|Neon|10.183|gold}} | |{{ptc|10|Ne|Neon|10.183|gold}} | ||
|- | |- | ||
| − | |{{ptc|11|Na|Sodium|22.99 | + | |{{ptc|11|Na|Sodium|22.99}} |
| − | |{{ptc|12|Mg|Magnesium|24.312 | + | |{{ptc|12|Mg|Magnesium|24.312}} |
!valign="bottom"|3B | !valign="bottom"|3B | ||
!valign="bottom"|4B | !valign="bottom"|4B | ||
| Line 45: | Line 45: | ||
!valign="bottom"|1B | !valign="bottom"|1B | ||
!valign="bottom"|2B | !valign="bottom"|2B | ||
| − | |{{ptc|13|Al|Aluminium|26.982 | + | |{{ptc|13|Al|Aluminium|26.982}} |
|{{ptc|14|Si|Silicon|28.086|#bbbbff}} | |{{ptc|14|Si|Silicon|28.086|#bbbbff}} | ||
|{{ptc|15|P|Phosphorus|30.974|#00ff00}} | |{{ptc|15|P|Phosphorus|30.974|#00ff00}} | ||
| Line 52: | Line 52: | ||
|{{ptc|18|Ar|Argon|39.948|gold}} | |{{ptc|18|Ar|Argon|39.948|gold}} | ||
|- | |- | ||
| − | |{{ptc|19|K|Potassium|39.102 | + | |{{ptc|19|K|Potassium|39.102}} |
| − | |{{ptc|20|Ca|Calcium|40.08 | + | |{{ptc|20|Ca|Calcium|40.08}} |
| − | |{{ptc|21|Sc|Scandium|44.956 | + | |{{ptc|21|Sc|Scandium|44.956}} |
| − | |{{ptc|22|Ti|Titanium|47.9 | + | |{{ptc|22|Ti|Titanium|47.9}} |
| − | |{{ptc|23|V|Vanadium|50.942 | + | |{{ptc|23|V|Vanadium|50.942}} |
| − | |{{ptc|24|Cr|Chromium|51.996 | + | |{{ptc|24|Cr|Chromium|51.996}} |
| − | |{{ptc|25|Mn|Manganese|54.938 | + | |{{ptc|25|Mn|Manganese|54.938}} |
| − | |{{ptc|26|Fe|Iron|55.847 | + | |{{ptc|26|Fe|Iron|55.847}} |
| − | |{{ptc|27|Co|Cobalt|58.933 | + | |{{ptc|27|Co|Cobalt|58.933}} |
| − | |{{ptc|28|Ni|Nickel|58.71 | + | |{{ptc|28|Ni|Nickel|58.71}} |
| − | |{{ptc|29|Cu|Copper|63.546 | + | |{{ptc|29|Cu|Copper|63.546}} |
| − | |{{ptc|30|Zn|Zinc|65.37 | + | |{{ptc|30|Zn|Zinc|65.37}} |
| − | |{{ptc|31|Ga|Gallium|69.72 | + | |{{ptc|31|Ga|Gallium|69.72}} |
|{{ptc|32|Ge|Germanium|72.59|#bbbbff}} | |{{ptc|32|Ge|Germanium|72.59|#bbbbff}} | ||
|{{ptc|33|As|Arsenic|74.922|#bbbbff}} | |{{ptc|33|As|Arsenic|74.922|#bbbbff}} | ||
| Line 71: | Line 71: | ||
|{{ptc|36|Kr|Krypton|83.8|gold}} | |{{ptc|36|Kr|Krypton|83.8|gold}} | ||
|- | |- | ||
| − | |{{ptc|37|Rb|Rubidium|85.47 | + | |{{ptc|37|Rb|Rubidium|85.47}} |
| − | |{{ptc|38|Sr|Strontium|87.62 | + | |{{ptc|38|Sr|Strontium|87.62}} |
| − | |{{ptc|39|Y|Yttrium|88.905 | + | |{{ptc|39|Y|Yttrium|88.905}} |
| − | |{{ptc|40|Zr|Zirconium|91.22 | + | |{{ptc|40|Zr|Zirconium|91.22}} |
| − | |{{ptc|41|Nb|Niobium|92.906 | + | |{{ptc|41|Nb|Niobium|92.906}} |
| − | |{{ptc|42|Mo|Molybdenum|95.94 | + | |{{ptc|42|Mo|Molybdenum|95.94}} |
| − | |{{ptc|43|Tc|Technetium|[97] | + | |{{ptc|43|Tc|Technetium|[97]}} |
| − | |{{ptc|44|Ru|Ruthenium|101.07 | + | |{{ptc|44|Ru|Ruthenium|101.07}} |
| − | |{{ptc|45|Rh|Rhodium|102.91 | + | |{{ptc|45|Rh|Rhodium|102.91}} |
| − | |{{ptc|46|Pd|Palladium|106.4 | + | |{{ptc|46|Pd|Palladium|106.4}} |
| − | |{{ptc|47|Ag|Silver|107.87 | + | |{{ptc|47|Ag|Silver|107.87}} |
| − | |{{ptc|48|Cd|Cadmium|112.4 | + | |{{ptc|48|Cd|Cadmium|112.4}} |
| − | |{{ptc|49|In|Indium|114.82 | + | |{{ptc|49|In|Indium|114.82}} |
| − | |{{ptc|50|Sn|Tin|118.69 | + | |{{ptc|50|Sn|Tin|118.69}} |
|{{ptc|51|Sb|Antimony|121.75|#bbbbff}} | |{{ptc|51|Sb|Antimony|121.75|#bbbbff}} | ||
|{{ptc|52|Te|Tellurium|127.6|#bbbbff}} | |{{ptc|52|Te|Tellurium|127.6|#bbbbff}} | ||
| Line 90: | Line 90: | ||
|{{ptc|54|Xe|Xenon|131.3|gold}} | |{{ptc|54|Xe|Xenon|131.3|gold}} | ||
|- | |- | ||
| − | |{{ptc|55|Cs|Caesium|132.91 | + | |{{ptc|55|Cs|Caesium|132.91}} |
| − | |{{ptc|56|Ba|Barium|137.34 | + | |{{ptc|56|Ba|Barium|137.34}} |
| − | |{{ptc|57*|La|Lanthanum|138.91 | + | |{{ptc|57*|La|Lanthanum|138.91}} |
| − | |{{ptc|72|Hf|Hafnium|178.49 | + | |{{ptc|72|Hf|Hafnium|178.49}} |
| − | |{{ptc|73|Ta|Tantalum|180.95 | + | |{{ptc|73|Ta|Tantalum|180.95}} |
| − | |{{ptc|74|W|Tungsten|183.85 | + | |{{ptc|74|W|Tungsten|183.85}} |
| − | |{{ptc|75|Re|Rhenium|186.2 | + | |{{ptc|75|Re|Rhenium|186.2}} |
| − | |{{ptc|76|Os|Osmium|190.2 | + | |{{ptc|76|Os|Osmium|190.2}} |
| − | |{{ptc|77|Ir|Iridium|192.2 | + | |{{ptc|77|Ir|Iridium|192.2}} |
| − | |{{ptc|78|Pt|Platinum|195.09 | + | |{{ptc|78|Pt|Platinum|195.09}} |
| − | |{{ptc|79|Au|Gold|196.97 | + | |{{ptc|79|Au|Gold|196.97}} |
| − | |{{ptc|80|Hg|Mercury (element)|200.59 | + | |{{ptc|80|Hg|Mercury (element)|200.59}} |
| − | |{{ptc|81|Tl|Thallium|204.37 | + | |{{ptc|81|Tl|Thallium|204.37}} |
| − | |{{ptc|82|Pb|Lead|207.19 | + | |{{ptc|82|Pb|Lead|207.19}} |
| − | |{{ptc|83|Bi|Bismuth|208.98 | + | |{{ptc|83|Bi|Bismuth|208.98}} |
| − | |{{ptc|84|Po|Polonium|210 | + | |{{ptc|84|Po|Polonium|210}} |
|{{ptc|85|At|Astatine|210|#bbbbff}} | |{{ptc|85|At|Astatine|210|#bbbbff}} | ||
|{{ptc|86|Rn|Radon|222|gold}} | |{{ptc|86|Rn|Radon|222|gold}} | ||
|- | |- | ||
| − | |{{ptc|87|Fr|Francium|215 | + | |{{ptc|87|Fr|Francium|215}} |
| − | |{{ptc|88|Ra|Radium|226.03 | + | |{{ptc|88|Ra|Radium|226.03}} |
| − | |{{ptc|89**|Ac|Actinium|227.03 | + | |{{ptc|89**|Ac|Actinium|227.03}} |
| − | |{{ptc|104|Rf|Rutherfordium|[261] | + | |{{ptc|104|Rf|Rutherfordium|[261]}} |
| − | |{{ptc|105|Db|Dubnium|[262] | + | |{{ptc|105|Db|Dubnium|[262]}} |
| − | |{{ptc|106|Sg|Seaborgium|[266] | + | |{{ptc|106|Sg|Seaborgium|[266]}} |
| − | |{{ptc|107|Bh|Bohrium|[264] | + | |{{ptc|107|Bh|Bohrium|[264]}} |
| − | |{{ptc|108|Hs|Hassium|[269] | + | |{{ptc|108|Hs|Hassium|[269]}} |
| − | |{{ptc|109|Mt|Meitnerium|[268] | + | |{{ptc|109|Mt|Meitnerium|[268]}} |
| − | |{{ptc|110|||[271] | + | |{{ptc|110|||[271]}} |
| − | |{{ptc|111|||[272] | + | |{{ptc|111|||[272]}} |
| − | |{{ptc|112|||[277] | + | |{{ptc|112|||[277]}} |
| | | | ||
| − | |{{ptc|114|||[289] | + | |{{ptc|114|||[289]}} |
| | | | ||
| − | |{{ptc|116|||[289] | + | |{{ptc|116|||[289]}} |
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| Line 130: | Line 130: | ||
|- | |- | ||
|colspan="2"|*Lanthanides | |colspan="2"|*Lanthanides | ||
| − | |{{ptc|58|Ce|Cerium|140.12 | + | |{{ptc|58|Ce|Cerium|140.12}} |
| − | |{{ptc|59|Pr|Praseodymium|140.91 | + | |{{ptc|59|Pr|Praseodymium|140.91}} |
| − | |{{ptc|60|Nd|Neodymium|144.24 | + | |{{ptc|60|Nd|Neodymium|144.24}} |
| − | |{{ptc|61|Pm|Promethium|145 | + | |{{ptc|61|Pm|Promethium|145}} |
| − | |{{ptc|62|Sm|Samarium|150.35 | + | |{{ptc|62|Sm|Samarium|150.35}} |
| − | |{{ptc|63|Eu|Europium|151.96 | + | |{{ptc|63|Eu|Europium|151.96}} |
| − | |{{ptc|64|Gd|Gadolinium|157.25 | + | |{{ptc|64|Gd|Gadolinium|157.25}} |
| − | |{{ptc|65|Tb|Terbium|158.92 | + | |{{ptc|65|Tb|Terbium|158.92}} |
| − | |{{ptc|66|Dy|Dysprosium|162.5 | + | |{{ptc|66|Dy|Dysprosium|162.5}} |
| − | |{{ptc|67|Ho|Holmium|164.93 | + | |{{ptc|67|Ho|Holmium|164.93}} |
| − | |{{ptc|68|Er|Erbium|167.26 | + | |{{ptc|68|Er|Erbium|167.26}} |
| − | |{{ptc|69|Tm|Thulium|168.93 | + | |{{ptc|69|Tm|Thulium|168.93}} |
| − | |{{ptc|70|Yb|Ytterbium|173.04 | + | |{{ptc|70|Yb|Ytterbium|173.04}} |
| − | |{{ptc|71|Lu|Lutetium|174.97 | + | |{{ptc|71|Lu|Lutetium|174.97}} |
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| Line 149: | Line 149: | ||
|- | |- | ||
|colspan="2"|**Actinides | |colspan="2"|**Actinides | ||
| − | |{{ptc|90|Th|Thorium|232.04 | + | |{{ptc|90|Th|Thorium|232.04}} |
| − | |{{ptc|91|Pa|Protactinium|231 | + | |{{ptc|91|Pa|Protactinium|231}} |
| − | |{{ptc|92|U|Uranium|238.03 | + | |{{ptc|92|U|Uranium|238.03}} |
| − | |{{ptc|93|Np|Neptunium|237.05 | + | |{{ptc|93|Np|Neptunium|237.05}} |
| − | |{{ptc|94|Pu|Plutonium|239.05 | + | |{{ptc|94|Pu|Plutonium|239.05}} |
| − | |{{ptc|95|Am|Americium|241.06 | + | |{{ptc|95|Am|Americium|241.06}} |
| − | |{{ptc|96|Cm|Curium|244.06 | + | |{{ptc|96|Cm|Curium|244.06}} |
| − | |{{ptc|97|Bk|Berkelium|249.08 | + | |{{ptc|97|Bk|Berkelium|249.08}} |
| − | |{{ptc|98|Cf|Californium|252.08 | + | |{{ptc|98|Cf|Californium|252.08}} |
| − | |{{ptc|99|Es|Einsteinium|252.08 | + | |{{ptc|99|Es|Einsteinium|252.08}} |
| − | |{{ptc|100|Fm|Fermium|257.1 | + | |{{ptc|100|Fm|Fermium|257.1}} |
| − | |{{ptc|101|Md|Mendelevium|258.1 | + | |{{ptc|101|Md|Mendelevium|258.1}} |
| − | |{{ptc|102|No|Nobelium|259.1 | + | |{{ptc|102|No|Nobelium|259.1}} |
| − | |{{ptc|103|Lr|Larencium|262.11 | + | |{{ptc|103|Lr|Larencium|262.11}} |
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Revision as of 23:35, January 24, 2008
The periodic table of the elements is a diagrammatic tool to illustrate the scientific theory of periodicity in chemistry, in which the elements have similar properties based on their position on the table. For example, the elements on the left of the table are all metals. The table has a lot of predictive power, although there are many exceptions to the periodic properties.
The periodic table was first developed by Russian chemist Dimitri Mendeleev. Its layout accurately arranges elements by their electron configuration, atomic number, and chemical properties. Using the structure he created, Mendeleev predicted the existence and properties of several yet-undiscovered elements; when those elements were discovered, his estimates proved to be quite accurate.
The Periodic Table
| 1A | 8A | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2A | 3A | 4A | 5A | 6A | 7A | ||||||||||||
| 3B | 4B | 5B | 6B | 7B | <--- | 8B | --> | 1B | 2B | ||||||||
110
[271] |
111
[272] |
112
[277] |
114
[289] |
116
[289] |
|||||||||||||
| *Lanthanides | |||||||||||||||||
| **Actinides | |||||||||||||||||
| Nonmetals | |||||||||||||||||
| Semimetals | |||||||||||||||||
| Metals | |||||||||||||||||
| Noble Gases | |||||||||||||||||