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प्रश्न
An analysis shows that FeO has a non-stoichiometric composition with formula Fe0.95O. Give reason.
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उत्तर
In FeO, Fe is present in both +2 and +3 oxidation state. Hence, FeO has a non-stoichiometric composition with the formula Fe0.95O
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संबंधित प्रश्न
Why do the transition elements have higher enthalpies of atomisation?
What are the transition elements? Write two characteristics of the transition elements.
Calculate the number of unpaired electrons in the following gaseous ions:
Mn3+, Cr3+, V3+ and Ti3+. Which one of these is the most stable in an aqueous solution?
Following are the transition metal ions of 3d series:
Ti4+, V2+, Mn3+, Cr3+
(Atomic numbers: Ti = 22, V = 23, Mn = 25, Cr = 24)
Answer the following:
1) Which ion is most stable in an aqueous solution and why?
2) Which ion is a strong oxidising agent and why?
3) Which ion is colourless and why?
Why do transition elements show variable oxidation states ? In 3d series (Sc to Zn), which elements shows the maximum number of oxidation state and why ?
Why do transition metals exhibit higher enthalpy of atomization?
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.
Account for the following:
Sc3+ is colourless whereas Ti3+ is coloured in an aqueous solution.
Give two similarities in the properties of Sc and Zn.
Describe the oxidising action of potassium dichromate and write the ionic equation for its reaction with H2S.
