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प्रश्न
Write the factors which are related to the colour of transition metal ions.
Write the conditions of colour of transition metal ions.
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उत्तर
- Metal ions exhibit the presence of incompletely filled d-orbitals.
- The presence of unpaired electrons in d-orbitals.
- The d-d transition of electrons due to absorption of radiation in the visible region.
- The metal ion in the complex undergoes a type of hybridisation.
- The geometry of the complex containing transition metal ions is described.
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संबंधित प्रश्न
Why is Sc3+ colourless while Ti3+ coloured? (Atomic number Sc = 21, Ti =22)
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Transition metals exhibit variable oxidation states.
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In 3d series (Sc to Zn), which element has the lowest enthalpy of atomisation and why?
What are the transition elements? Write two characteristics of the transition elements.
Account for the following:
Zn is not considered as a transition element.
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Which of the following transition metal is not coloured?
Why is the `"E"_(("V"^(3+)//"V"^(2+)))^"o"` value for vanadium comparatively low?
The number of terminal oxygen atoms present in the product B obtained from the following reactions is:
\[\ce{FeCr2O4 + Na2CO3 + O2 -> A + Fe2O3 + CO2}\]
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Which one among the following metals of the 3d series has the lowest melting point?
Which of the following transition metals shows +1 and +2 oxidation states?
Write the number of unpaired electrons in Cr3+.
(Atomic number of Cr = 24)
Give a reason for the following:
Transition metals possess a great tendency to form complex compounds.
