Fill in the blanks:
$(1)$ Lithium on reaction with nitrogen present in air is denoted by .....
$(2)$ Potassium gives ...... colour in oxidizing flame.
$(3)$ ....... and ........ metals are used in photoelectric cells.
$(4)$ When alkali metal dissolves in ammonia,it produces a blue-coloured solution. This colour is due to .......
$(1)$ Lithium on reaction with nitrogen present in air is denoted by .....
$(2)$ Potassium gives ...... colour in oxidizing flame.
$(3)$ ....... and ........ metals are used in photoelectric cells.
$(4)$ When alkali metal dissolves in ammonia,it produces a blue-coloured solution. This colour is due to .......
(N/A) $(1)$ $Li_3N$
$(2)$ Violet
$(3)$ Cesium,potassium
$(4)$ Ammoniated electrons
$(2)$ Violet
$(3)$ Cesium,potassium
$(4)$ Ammoniated electrons
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Similar Questions
Match the elements given in Column-$I$ with the colour they impart to the flame given in Column-$II$.
Column-$I$ Column-$II$ $A$. $Cs$ $1$. Apple green $B$. $Na$ $2$. Violet $C$. $K$ $3$. Brick red $D$. $Ca$ $4$. Yellow $E$. $Sr$ $5$. Crimson red $F$. $Ba$ $6$. Blue
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. $Cs$ | $1$. Apple green |
| $B$. $Na$ | $2$. Violet |
| $C$. $K$ | $3$. Brick red |
| $D$. $Ca$ | $4$. Yellow |
| $E$. $Sr$ | $5$. Crimson red |
| $F$. $Ba$ | $6$. Blue |
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