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Why solutions of alkali metals in liquid ammonia are blue? How electrons undergo transitions?

Why solutions of alkali metals in liquid ammonia are blue? How electrons undergo transitions?

Grade:12

1 Answers

Gaurav
askIITians Faculty 164 Points
9 years ago
When the alkali metals are dissolved in liquid ammonia, it forms the ammoniated metal ion and ammoniated electrons in the manner as:
M + NH3-> M+(NH3)x+ e-(NH3)y,
Here, teh ammoniated electrons absorbs the visiblelight corresponding to red region and so the colour reflected is deep blue.

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