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Chapter 2: Problem 68

Selenium, an element required nutritionally in trace quantities, forms compounds analogous to sulfur. Name the following ions: (a) \(\mathrm{SeO}_{4}^{2-}\), (b) \(\mathrm{Se}^{2-}\), (c) \(\mathrm{HSe}^{-}\), (d) \(\mathrm{HSeO}_{3}^{-}\).

Short Answer

Expert verified
The given ions are named as follows: (a) \(\mathrm{SeO}_{4}^{2-}\): selenate (b) \(\mathrm{Se}^{2-}\): selenide (c) \(\mathrm{HSe}^{-}\): hydrogen selenide (biselenide) (d) \(\mathrm{HSeO}_{3}^{-}\): hydrogen selenite (biselenite)

Step by step solution

01

Naming \(\mathrm{SeO}_{4}^{2-}\) ion

First, we will find the name of the \(\mathrm{SeO}_{4}^{2-}\) ion. This ion is very similar to the \(\mathrm{SO}_{4}^{2-}\) ion, which is known as sulfate. Since selenium (Se) is chemically similar to sulfur (S), we can name the \(\mathrm{SeO}_{4}^{2-}\) ion as "selenate."
02

Naming \(\mathrm{Se}^{2-}\) ion

Next, we find the name of the \(\mathrm{Se}^{2-}\) ion. This ion is analogous to the \(\mathrm{S}^{2-}\) ion, which is known as sulfide. Therefore, we can name the \(\mathrm{Se}^{2-}\) ion as "selenide."
03

Naming \(\mathrm{HSe}^{-}\) ion

Now, we will find the name of the \(\mathrm{HSe}^{-}\) ion. This ion is similar to the \(\mathrm{HS}^{-}\) ion, which is known as hydrogen sulfide or bisulfide. Thus, we can name the \(\mathrm{HSe}^{-}\) ion as "hydrogen selenide" or "biselenide."
04

Naming \(\mathrm{HSeO}_{3}^{-}\) ion

Finally, we find the name of the \(\mathrm{HSeO}_{3}^{-}\) ion. It is structurally analogous to the \(\mathrm{HSO}_{3}^{-}\) ion, which is known as hydrogen sulfite or bisulfite. Therefore, we can name the \(\mathrm{HSeO}_{3}^{-}\) ion as "hydrogen selenite" or "biselenite." To sum up, we have named the given ions as follows: (a) \(\mathrm{SeO}_{4}^{2-}\): selenate (b) \(\mathrm{Se}^{2-}\): selenide (c) \(\mathrm{HSe}^{-}\): hydrogen selenide (biselenide) (d) \(\mathrm{HSeO}_{3}^{-}\): hydrogen selenite (biselenite)

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