Chemistry (M.Phil./Ph.D.) 2018 Panjab University Entrance Exam With Answers

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22.

Which is thermodynamically unstable and also kinetically labile?

A: [Co(H2O)6]^3+
B: [Co(H2O)6]^2+
C: [Co(NH3)6]^3+
D: [Co(NH3)6]^2+

The answer is: D