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Q.
A solution of $Na$ in liquid $NH_{3}$ is
Bihar CECEBihar CECE 2009
Solution:
When alkali metals are dissolved in liquid ammonia, a blue coloured solution is obtained. This solution is paramagnetic in nature.
$Na ^{+}+(x +y) NH _{3}+e^{-} \longrightarrow \underset{\text{ammoniated sodium}}{\left[ Na \left( NH _{3}\right)_{x}\right]^{+}}+\underset{\text{ammoniated electrons (blue)}}{\left[e\left( NH _{3}\right)_{y}\right]^{-}}$