When sodium metal is dissolved in liquid ammonia, blue colour solution is formed. The blue colour is due to

Options

A. Solvated `Na^(+) ions`
B. Solvated electrons
C. Solvated `NH_(2)^(-)` ions
D. Solvated protons

Answer

B

Explanation

When sodium metal is dissolved in liquid ammonia to form coloured solution. Dilute solutions are bright blue in colour due to the presence of solvated electrons.
`Na+(x+y)NH_(3) rarr [Na(NH_(3))_(x)]^(+)+[e(NH_(3))_(y)]^(-)`
Blue colour