In which compound does chromium have a $+6$ oxidation state?
- A$K_2Cr_2O_7$
- B$CrCl_3$
- C$Cr_2(SO_4)_3$
- DNone of these
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The transition element of $III-B$ group which forms an alum isomorphic with $Al_2(SO_4)_3 \cdot 18H_2O$ is $Sc$. The color of the compound $Sc_2(SO_4)_3 \cdot (NH_4)_2SO_4 \cdot 24H_2O$ is:
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View SolutionThe total number of $Mn=O$ bonds in $Mn_2O_7$ is
Guignet's green is known as
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View Solution$K_2MnO_4$ can be converted into $KMnO_4$ by
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View SolutionThe solution of $MnO_4^-$ is purple-coloured due to:
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