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प्रश्न
In the two tetrahedral structures of dichromate ion, ______.
पर्याय
4 Cr–O bonds are equivalent in length
6 Cr–O bonds are equivalent in length
All Cr–O bonds are equivalent in length
All Cr–O bonds are non-equivalent
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उत्तर
In the two tetrahedral structures of dichromate ion, 6 Cr–O bonds are equivalent in length.
Explanation:
The Dichromate di-anion is made up of two tetrahedral molecules that share oxygen at their common corner. The structure of the chromate ion is tetrahedral. Due to resonance, the six terminal bonds in the dichromate ion have the same bond length. As a result, all six Cr–O bonds are equivalent.
6 Cr–O bonds are equivalent
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संबंधित प्रश्न
Indicate the steps in the preparation of KMnO4 from pyrolusite ore.
Account for the following :
Manganese shows maximum number of oxidation states in 3d series.
Generally transition elements and their salts are coloured due to the presence of unpaired electrons in metal ions. Which of the following compounds are coloured?
(i) \[\ce{KMnO4}\]
(ii) \[\ce{Ce(SO4)2}\]
(iii) \[\ce{TiCl}\]
(iv) \[\ce{Cu2 Cl2}\]
What is the effect of pH on dichromate ion solution?
Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of ______.
Complete the reaction mentioning all the products formed:
\[\ce{2KMnO4 ->[\Delta]}\]
Complete the reaction mentioning all the products formed:
\[\ce{Cr2O^{2-}7 + 3H2S + 8H^+ ->}\]
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
