Statement I: Alkali metals dissolve in liquid ammonia to give blue solutions.
Statement II: Alkali metals in liquid ammonia give solvated species of the type `[M(NH_(3))_(n)]^(o+)` (M = alakli metals).

Options

A. Statement I is true, Statement II is true, Statement II is the correct explanation for statement I.
B. Statement I is true, Statement II is true, Statement II is not the correct explanation for Statement I.
C. Statement I is true, Statement II is false.
D. Statement I is false, Statement II is true.

Answer

B

Explanation

The alkali metals dissolve in liquid ammonia without the evolution of hydrogen. The colour the dilute solution is blue.
`Na^(o+)+(x+y)NH_(2)rarr[Na(NH_(3))_(x)]^(o+)+underset("electrons")underset("Ammonia")([e(NH_(3))_(y)]^(Θ)`
On heating, its blue colour changes to bronze.
It is an ammoniated electron which is responsible are good conductors of electricity and have strong reducing properties. The solutions are paramagnetic in nature.