Answer
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Work Step by Step
The oxyanions of selenium and tellurium mentioned in the question are:
1. $SeO_{4}^{2-}$: This is the selenate ion, which is the oxyanion of selenium with the oxidation state of +6.
2. $SeO_{3}^{2-}$: This is the selenite ion, which is the oxyanion of selenium with the oxidation state of +4.
3. $TeO_{4}^{2-}$: This is the tellurate ion, which is the oxyanion of tellurium with the oxidation state of +6.
4. $TeO_{3}^{2-}$: This is the tellurite ion, which is the oxyanion of tellurium with the oxidation state of +4.
The naming of these oxyanions follows a similar pattern, where the suffix "-ate" is used for the higher oxidation state (+6) and the suffix "-ite" is used for the lower oxidation state (+4).
