Multiple Choice
Of the following complex ions: [CoCl(NH3) 5]2+, [Co(NH3) 6]3+, [Co(en) 3]3+, [Co(H2O) 6]3+, one appears pink, two are yellow, and one blue. Which is blue?
A) [Co(NH3) 6]3+
B) [CoCl(NH3) 5]2+
C) [Co(H2O) 6]3+
D) [Co(en) 3]3+
E) both [Co(en) 3]3+ and [Co(H2O) 6]3+
Correct Answer:

Verified
Correct Answer:
Verified
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