Regarding the solution of alkali metals in li | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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.

Similar Questions

$A$ metal which does not react with nitrogen is

Select the incorrect statement.

The solubility of metal halides depends on their nature,lattice enthalpy and hydration enthalpy of the individual ions. Amongst fluorides of alkali metals,the lowest solubility of $LiF$ in water is due to

Which of the following statements is $NOT$ correct?

Beryllium is placed above magnesium in the second group. Beryllium dust,therefore,when added to $MgCl_2$ solution will:

Vedclass Test Series

Exam Paper Generator

Online Exam Module