Q131CP - Chemistry: Molecular Nature Of Matter And Change

Question

Polyatomic ions are named by patterns that apply to elements in a given group. Using the periodic table and Table 2.5, give the name of each of the following: 

(a) SeO₄^2-; (b) AsO₄^3-; (c) BrO₂^-; (d) HSeO4^-; (e) TeO₃^2-.

Step-by-Step Solution

Answer

The naming for the following elements are,

1. Selenate
2. Arsenate
3. Bromite
4. Hydrogen selenate
5. Tellurite

Step 1: Finding the name for SeO 4 2 -

Selenium is a polyatomic ion with four oxygen. The suffix can be changed into –ate depending on the name pattern. The name is selenate.

Step 2: Finding the name for AsO 4 2 -

Arsenic is a polyatomic ion with four oxygen. The suffix can be changed into –ate depending on the name pattern. The name is arsenate

Step 3: Finding the name for BrO 2 -

Bromine is a polyatomic ion with 2 oxygen. The suffix can be changed into –it depends on the name pattern. The name is bromite.

Step 4: Finding the name for HSeO 4 -

Selenium is a polyatomic ion with four oxygen. The suffix can be changed into –ate depending on the name pattern. The name is hydrogen selenate

Step 5: Finding the name for TeO 3 2 -

Thetellerium is a polyatomic ion with 3 oxygen. The suffix can be changed into –it depends on the name pattern. The name is tellurite.