A) \[C{{r}^{3+}}\]
B) \[M{{n}^{2+}}\]
C) \[C{{o}^{2+}}\]
D) \[N{{i}^{2+}}\]
Correct Answer: A
Solution :
[a] Borax react with \[C{{r}^{3+}}\] to form dark green coloured bead in reducing flame.You need to login to perform this action.
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