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. Ammoniated solution 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

Dilute solutions of alkali metals in liquid NH_(3) are blue. It is the

1.	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. Ammoniated solution 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
Answer» `III` & `IV` `II` & `III` `I, II, III` & `IV` `I, III` & `IV` Solution :`M(s)+NH_(3)("liq.") RARR M^(+). (NH_(3))_(x) + bar(e).(NH_(3))_(y)` `{:("excess",,"Ammoniated "bar(e)" responsible for"),(,,"BLUE color & reducing character."):}` If conc. of solution is increased, then association of solvated electrons get started hence, paramagnetism decreases.