Tellurate
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The tellurate ion is TeO42− or TeO66−.
Unlike sulfate, tellurate is a somewhat good oxidizer; it can be reduced to tellurite or tellurium.
Tellurate exists in two forms, metatellurate ion, TeO42−, and orthotellurate ion, TeO66−.
Compounds include metatellurates and orthotellurates. Metatellurates are analogous to sulfates, but they are rare. Orthotellurates are much more common and this forms most of the chemistry of tellurates.
In neutral conditions, pentahydrogen orthotellurate ion, H5TeO6−, is most common; in basic conditions, tetrahydrogen orthotellurate ion, H4TeO62−, is found; in acid conditions, the orthotelluric acid, H6TeO6 is formed.
See category for a list.
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