Which of the following may be colourless [RPMT 1997; RPET/PMT 1999]

1.	Which of the following may be colourless [RPMT 1997; RPET/PMT 1999]
A.	\[C{{r}^{+3}}\]
B.	\[C{{u}^{+}}\]
C.	\[F{{e}^{+3}}\]
D.	\[C{{u}^{2+}}\]
Answer» C. \[F{{e}^{+3}}\]

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Which of the following may be colourless [RPMT 1997; RPET/PMT 1999]

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