MCQ
Formula for the compound sodium hexacynoferrate (III) is
- A$\left[ NaFe ( CN )_6\right]$
- B$Na _2\left[ Fe ( CN )_6\right]$
- C$Na \left[ Fe ( CN )_6\right]$
- ✓$Na _3\left[ Fe ( CN )_6\right]$
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