MCQ
A $D-$ carbohydrate is
- AAlways dextrorotatory
- BAlways laevorotatory
- CAlways the mirror of the corresponding $L-$ carbohydrate
- ✓None of these
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$(i)$ $\left[ M ( NCS )_{6}\right]^{(-6+ n )}$
$(ii)$ $\left[ MF _{6}\right]^{(-6+ n )}$
$(iii)$ $\left[ M \left( NH _{3}\right)_{6}\right]^{ n ^{+}}$