Assertion: `[Al(NH_(3))_(6)]^(3+)` does not exist in aqueous solution.
Reason: `Al^(3+)` being smaller ion posseses high degree of hydration. `[Al(NH_(3))_(6)]^(3+)+6?H_(2)O to [Al(H_(2)O)_(6)]^(3+)+6NH_(3)`

Options

A. If both assertion and reason are true and the reason is the correct explanation of teh assertion.
B. If both assertion and reason are true but reason in not the correct explation of the assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

A

Explanation

`Al^(3+)` ions being smaller posses high degree of hydration and therefore, the ligand `H_(2)O` takes position of `NH_(3)`.