Question

16.
Which of the following radicals is trivalent?
(1) Sulphide
(2) Bicarbonate
(3) Phosphate
(4) Sulphate​

Answer 1

Answer:

Phosphate is the correct answer.

Answer 2

Answer: The correct answer is Option 3.

Explanation:

Trivalent radicals are defined as the radicals which carry a charge of 3. The charge can be negative or positive.

This also means that the radical can form maximum of 3 bonds.

For the given options:

Option 1:  Sulfide

The chemical formula of sulfide ion is $S^{2-}$. It carries a charge of -2 and is a divalent ion.

Option 2:  Bicarbonate

The chemical formula of bicarbonate ion is $HCO_3^-$. It carries a charge of -1 and is a monovalent ion.

Option 3:  Phosphate

The chemical formula of phosphate ion is $PO_4^{3-}$. It carries a charge of -3 and is a trivalent ion.

Option 4:  Sulfate

The chemical formula of sulfate ion is $SO_4^{2-}$. It carries a charge of -2 and is a divalent ion.

Hence, the correct answer is Option 3.