1. Tardigrade
  2. Question
  3. Chemistry
  4. The solution of N a in dry ether not only contains N a text solv. +and e text solv. -but also contains N a text solv. -formed by the following disproportionation reaction. 2 N a(s) N a text solv. ++N a text solv. - The large sodide ion can be stabilized by making its

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Q. The solution of $N a$ in dry ether not only contains $N a_{\text {solv. }}^{+}$and $e_{\text {solv. }}^{-}$but also contains $N a_{\text {solv. }}^{-}$formed by the following disproportionation reaction. $2 N a(s) N a_{\text {solv. }}^{+}+N a_{\text {solv. }}^{-}$ The large sodide ion can be stabilized by making its

Uttarkhand PMTUttarkhand PMT 2007

Solution:

With cryptand-$222$, $Na$ forms an unusual compound of the formula, [$Na$ (cryptand-$222)] Na^{-} $ . The large cryp ligand completely shields the $ Na^{+} $ . ion and prevents it combining with $ Na^{-} $ .