Question

Which of the following is a divalent compound radical ? Nitrate Oxide Carbonate Ammonium

Answer 1

To find:

Divalent radicle among the given options.

• Nitrate
• Oxide
• Carbonate
• Ammonium

Solution:

Among the given radicals carbonate is a divalent radical.

Now , lets see the structure:

$\boxed{ \bf{carbonate = {CO_{3}}^{-2} }}$

Cabonate radical can combine with many other elements to produce ionic compounds such as:

• Sodium carbonate (Na2CO3)

• Calcium carbonate (CaCO3)

• Zinc Carbonate (ZnCO3)

Other options are eliminated because:

• Ammonium radical is uni-positive , hence univalent (NH4+).

• Nitrate radical is uni-negative , hence univalent (NO3-).

• Oxide is an ion , but not a radical.

Hope It Helps.

Answer 2

Carbonate is a divalent compound radical.

Option (c) is correct.

Explanation:

• Carbonate is a divalent compound radical.
• The formula of carbonate divalent ion is [CO32−].
• The formula shows that carbonate has 2- charge on it which also shows that it an anion.
• The carbonate divalent compound combines with divalent positive ions to form neutral compounds or salts.
• For example, it combines with Sodium ions and hydrogen ions to form Na2CO3 & H2CO3 respectively.