Periodic Table |
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| What is the Periodic Table Showing? | Periodicity |
The INTERNET Database of Periodic Tables
There are thousands of periodic tables in web space, but this is the only comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R. Leach Ph.D. The database hold information on periodic tables, the discovery of the elements and elucidation of atomic weights (and more).
| Year: 2021 | PT id = 1232, Type = formulation review |
The Periodic Table: Is it Perfect, is it Fractured or is it Broken?
A video from Mark Leach, who writes:
The periodic table is an icon of science. Indeed, all chemical matter is made from periodic table stuff. The periodic table of the elements is often presented as being:
- With 118 elements the periodic table is now complete
- The periodic table is perfectly described (fully explained) by the application of four quantum numbers with the and some simple rules
- Chemical structure & reactivity can be deduced from the periodicity of the Groups & Periods
However, the chemistry of the chemical elements is actually a little more complicated than this. So, where & why does the predictability 'break'?
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| What is the Periodic Table Showing? | Periodicity |
© Mark R. Leach Ph.D. 1999 –
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