Question

When EDTA solution is added to $M{g}^{2+}$ solution, then which of the following statement is true

• A. Four coordination sites of $M{g}^{2+}$ are occupied by EDTA and remaining two sites are occupied by water molecules.
• B. All six coordination sites of $M{g}^{2+}$ are occupied.
• C. pH of the solution is decreased.
• D. Colourless $[Mg-EDTA{]}^{2-}$ chelate is formed.

Answer 1

The correct option is B All six coordination sites of $M{g}^{2+}$ are occupied.

EDTA is a hexadentate ligand. So, all six coordination sites of $M{g}^{2+}$ are occupied.