Regarding the solution of alkali metals in li | vedclass

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Question

(D) When alkali metals dissolve in liquid ammonia,they form a deep blue solution due to the presence of ammoniated electrons $(M + (x+y)NH_3 \rightarr

Vedclass · Accepted Answer

None of the above.

Vedclass · Answer

(D) When alkali metals dissolve in liquid ammonia,they form a deep blue solution due to the presence of ammoniated electrons $(M + (x+y)NH_3 \rightarrow [M(NH_3)_x]^+ + [e(NH_3)_y]^-)$.$1$. The blue colour is indeed due to the ammoniated electrons,which absorb energy in the visible region of the spectrum.$2$. Upon dilution,the concentration of ammoniated electrons decreases,leading to a decrease in colour intensity.$3$. On standing for a long time,the solution reacts to form metal amide and hydrogen gas $(2M + 2NH_3 \rightarrow 2MNH_2 + H_2)$,which causes the blue colour to disappear,making the solution colourless.Since all statements $(A)$,$(B)$,and $(C)$ are correct,the incorrect statement is none of these.

Regarding the solution of alkali metals in liquid ammonia,select the incorrect statement.

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