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chemistry

Experiments are sorted by the elements they best represent.

Within each element, experiments are grouped into four categories:


(i)    A look at the element itself and basic compounds such as oxides, chlorides and sulfates.

(ii)   A look at the oxidation states of the element and redox chemistry.

(iii)  A look at coordination complexes with common ligands.

(iv)  A look at coordination complexes with more exotic ligands.






                                                                 Green buttons contain experiments.

                                                   Orange buttons are placeholders for future development.


Grp.                  4                              5                             6                             7                              8                             9                            10                           11


3d


4d


5d

TECHNETIUM

NIOBIUM

ZIRCONIUM

HAFNIUM

TANTALUM

What about the other transition elements?


The criteria for selecting elements to study was that they must have at least one oxidation state that a stable in aqueous solution which contains a partly filled d shell.  Scandium, Yttrium and Lanthanum only exist in the +3 state (i.e. an empty d shell).  Ions of Zinc, Cadmium and Mercury only exist with a completely full d shell.


Zirconium, Hafnium and Tantalum are only stable in their group oxidation state +4, +4 and +5 respectively, and therefore only with empty d shells.


Technetium is dangerously radioactive and unavailable.


Niobium does meet the criteria but I have been unable to obtain any compounds and the metal is completely inert, so it is missing.