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प्रश्न
What is the oxidation state of chromium in chromate ion and dichromate ion?
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उत्तर
In both chromate and dichromate ion the oxidation state of Cr is +6.
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संबंधित प्रश्न
In 3d series (Sc to Zn), which element has the lowest enthalpy of atomisation and why?
Which of the 3d series of the transition metals exhibits the largest number of oxidation states and why?
What can be inferred from the magnetic moment value of the following complex species?
| Example | Magnetic Moment (BM) |
| K2[MnCl4] | 5.9 |
Transition elements show high melting points. Why?
EΘ of Cu is + 0.34V while that of Zn is – 0.76V. Explain.
Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds.
Account for the following:
In case of transition elements, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number.
The spin magnetic moment of cobalt in the compound Hg [Co(SCN)4] is:-
Which of the following transition metals shows +1 and +2 oxidation states?
Give a reason for the following:
Transition metals possess a great tendency to form complex compounds.
