A) \[B{{a}^{2+}}\]
B) \[S{{r}^{2+}}\]
C) \[C{{a}^{2+}}\]
D) \[N{{a}^{+}}\]
Correct Answer: A
Solution :
Flame colouration All the alkali and some alkaline metals impart a characteristic colour to the flame. When paste of salt in cone. HCl is burnt on a spetchula the following coloured flame appears for different radicals.Cation | Colour |
\[N{{a}^{+}}\] | golden yellow |
\[{{K}^{+}}\] | violet |
\[C{{a}^{2+}}\] | brick red |
\[S{{r}^{2+}}\] | crimson red |
\[B{{a}^{2+}}\] | apple green |
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