NAMING SIMPLE INORGANIC AND ORGANIC COMPOUNDS

Question

1. Based on the formula for the sulfate ion (SO₄^2–), predict the formula for

(a) the selenate ion

(b) the selenite ion.

(Sulfur and selenium are both in group 6A and form analogous oxyanions.)

Answer 1

They are telling you that Se acts just like S in this case (same valence). Just put Se where S is in the sulfate ion in order to get the selenate ion (same formula, same charge)

"ite" ions are just like "ate" with one O less (same charge)

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