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  4. Which of the following radicals gives the apple green flame during flame test?

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Q. Which of the following radicals gives the apple green flame during flame test?

Bihar CECEBihar CECE 2006

Solution:

When paste of salt in conc. $HCl$, is burnt on a spetchula, the following coloured flame appears for different radicals
$ B{{a}^{2+}}- $ apple green
$ S{{r}^{2+}}- $ crimson red
$ C{{a}^{2+}}- $ brick red
$ N{{a}^{+}}- $ golden yellow