JEE Chemistry Practice Question
The green colour produced in the borax bead test of a chromium(III) salt is due to
- A.$\mathrm{Cr}\left(\mathrm{BO}_{2}\right)_{3}$
- B.$\mathrm{Cr}_{2}\left(\mathrm{~B}_{4} \mathrm{O}_{7}\right)_{3}$
- C.$\mathrm{Cr}_{2} \mathrm{O}_{3}$
- D.$\mathrm{CrB}$
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