MCQ
Which of the following is non-ionizable ?
- ✓$[Co(NH_3)_3Cl_3]$
- B$[Co(NH_3)_4Cl_2]Cl$
- C$[Co(NH_3)_5Cl]Cl_2$
- D$[Co(NH_3)_6]Cl_3$
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(At. nos. $Cr = 24, Mn = 25, Fe = 26, Co = 27$)
$(A)$ $NO _3^{-}$ $(B)$ $Cl ^{-}$ $(C)$ $SCN ^{-}$ $(D)$ $CN ^{-}$