MCQ
Identify incorrect statement
- ✓$Cu_2O$ is colourless
- BCopper $(I)$ compounds are colourless except when colour results from charge transfer
- CCopper $(I)$ compounds are diamagnetic.
- D$Cu_2S$ is black.
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$CH_3CH_2OH$ $\xrightarrow{{P + {I_2}}}A\xrightarrow[{{\text{dry ether}}}]{{Mg}}B\xrightarrow{{HCHO}}C\xrightarrow{{{H_2}O}}D$ the compound $D$ is

(At. No. $Ti = 22, V = 23, Cr = 24, Mn = 25$)
