Q. What colour is imparted into the flame when lithium is burnt?
J & K CETJ & K CET 2014The s-Block Elements
Solution:
S.No
Colour S. No
Cation
[a]
Golden yellow
$Na^+$
[b]
Brick red
$Ca^{2+}$
[c]
Crimson red
$Li^+$
[d]
Grassy green
$Cu^{2+} , BO_3^{3-} , Tl^{3-}$
| S.No | Colour S. No | Cation |
|---|---|---|
| [a] | Golden yellow | $Na^+$ |
| [b] | Brick red | $Ca^{2+}$ |
| [c] | Crimson red | $Li^+$ |
| [d] | Grassy green | $Cu^{2+} , BO_3^{3-} , Tl^{3-}$ |