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Which of the following will have maximum stabilization due to crystal field?

1. [Ti(H 2 O) 6 ] 3+
2. [Co(H 2 O) 6 ] 2+
3. [Co(CN) 6 ] -3
4. [Cu(NH 3 ) 4 ] 2+

Correct answer: [Co(CN) 6 ] -3

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