MCQ
Consider the coordination compound, $K _2\left[ Cu ( CN )_4\right]$. A coordinate covalent bond exists between:
- A$K ^{+} \text {and } CN ^{-}$
- ✓$Cu ^{2+} \text { and } CN ^{-}$
- C$K ^{+} \text {and }\left[ Cu ( CN )_4\right]^{2-}$
- D$Cu ^{2+} \text { and } K ^{+}$