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All alkali metals dissolve in anhydrous ...

All alkali metals dissolve in anhydrous liquid ammonia to give blue colour solution. It is the ammoniated electron which is reponsible for the blue colour of the solution, and the electrical conductivity is due to the ammoniated cation, `[M(NH_(3))_(x)]^(+)` as well as the ammoniated electron,` [e(NH_(3))_(y)]^(-)`, value of x and y depend on the extent of solvation by `NH_(3)`. Dilute solutions are paramagnetic due to free ammoniated electrons.
Q. What happens if more alkali metals is allowed to react with concentrated liquid ammonia?

A

Paramagnetic character of solvated electrons is retained

B

Solvated electrons associate to form electron-pairs and paramagnetic character decrease

C

Reducing character is increased

D

Reducing character is not affected

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The correct Answer is:
B
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All alkali metals dissolve in anhydrous liquid ammonia to give blue colour solution. It is the ammoniated electron which is reponsible for the blue colour of the solution, and the electrical conductivity is due to the ammoniated cation, [M(NH_(3))_(x)]^(+) as well as the ammoniated electron, [e(NH_(3))_(y)]^(-) , value of x and y depend on the extent of solvation by NH_(3) . Dilute solutions are paramagnetic due to free ammoniated electrons. Q. Ammoniated solutions of alkali metals are reducing agents due to the presence of free ammoniated or solvated electrons that can reduce: (I) O_(2) "to" O_(2)^(2-) (II) K_(2)[Ni(CN)_(4)] " to "K_(4)[Ni(CN)_(4)] (III) Aromatic ring (IV) Non-terminal alkyne Choose the correct code:

All alkali metals dissolve in anhydrous liquid ammonia to give blue colour solution. It is the ammoniated electron which is reponsible for the blue colour of the solution, and the electrical conductivity is due to the ammoniated cation, [M(NH_(3))_(x)]^(+) as well as the ammoniated electron, [e(NH_(3))_(y)]^(-) , value of x and y depend on the extent of solvation by NH_(3) . Dilute solutions are paramagnetic due to free ammoniated electrons. Q. Which of the following statement about solution of alkali metals in liquid ammonia is correct?

Dilute solutions of alkali metals in liquid NH_(3) are blue. It is the ammoniated electron which is responsible for the blue colour of the solution, and the electrical conductivity is due to the ammoniated cation, [M(NH_(3))_(x)]^(+) as well as the ammoniated electrons, [e(NH_(3))_(y)]^(-) , values of x and y depend on the extent of solvation (by NH_(3) ). Dilute solutions are paramagnetic due to free electrons. What happens if alkali metals is allowed to react with concentrated liquid ammonia?

A solution of sodium in liquid ammonia is blue in colour due to:

The alkali metals dissolve in liquid NH_(3) , it is found that:

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The blue colour of solution of ammonia and alkali metals is due to which species?

Sodium metal dissolves in liquid ammonia and forms a deep blue solution. The colour is due to absorption of light by :

In an electrolytic solution the electric current is mainly due to the movement of free electrons.

When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to

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