When sodium metal is dissolved in liquid ammo | vedclass

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Question

(B) The correct answer is $(B)$.When alkali metals like sodium dissolve in liquid ammonia,they undergo ionization to form ammoniated cations and ammon

Vedclass · Accepted Answer

Solvated electrons

Vedclass · Answer

(B) The correct answer is $(B)$.When alkali metals like sodium dissolve in liquid ammonia,they undergo ionization to form ammoniated cations and ammoniated electrons.The reaction is: $Na + (x + y)NH_3 	o [Na(NH_3)_x]^+ + [e(NH_3)_y]^-$.The blue colour of the solution is primarily due to the presence of solvated electrons $([e(NH_3)_y]^-)$,which absorb energy in the visible region of the spectrum.

Compound	Flame color
$1$. $Li$	$a$. Crimson red
$2$. $K$	$b$. Violet
$3$. $Cs$	$c$. Blue

$I. Na_3N$	$II. Na_2O$
$III. NaO_2$	$IV. Na_2O_2$

When sodium metal is dissolved in liquid ammonia,a blue-coloured solution is formed. The blue colour is due to:

Similar Questions

The metallic lustre exhibited by sodium is explained by

Which of the following is the strongest reducing agent?

Four reactions are given below:
$(i)$ $2Li + 2H_2O \to 2LiOH + H_2$
$(ii)$ $2Na + 2H_2O \to 2NaOH + H_2$
$(iii)$ $2LiNO_3 \xrightarrow{\text{Heat}} 2LiNO_2 + O_2$
$(iv)$ $2NaNO_3 \xrightarrow{\text{Heat}} 2NaNO_2 + O_2$
Which of the above,if any,is wrong?

Match the following metals with their oxidizing flame color.

Compound Flame color

$1$. $Li$ $a$. Crimson red

$2$. $K$ $b$. Violet

$3$. $Cs$ $c$. Blue

When sodium is heated in excess of air,which of the following compounds are obtained?

$I. Na_3N$ $II. Na_2O$

$III. NaO_2$ $IV. Na_2O_2$

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