Advertisements
Advertisements
प्रश्न
Give reasons: Sc3+ is colourless in aqueous solution whereas Ti3+ is coloured.
Advertisements
उत्तर १
Sc3+ has no unpaired electron. So, it is colourless, whereas Ti3+ has one unpaired electron. Hence, it is coloured
उत्तर २
Compounds of transition elements are coloured due to the presence of unpaired electrons in d-orbitals as they show d-d-transition. In Sc+3 there are no d-electrons in Ti+3 there is one d-electrons.
APPEARS IN
संबंधित प्रश्न
How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.
How would you account for the following?
Transition metals and their compounds act as catalysts.
Complete and balance the following chemical equations
`MnO_4^(-) + H_2O + I^(-) ->`
How is potassium dichromate prepared from chrome iron ore?
Account for the following :
Ti4+ is colourless whereas V4+ is coloured in an aqueous solutions.
Out of \[\ce{Cu2Cl2}\] and \[\ce{CuCl2}\], which is more stable and why?
Catalytic hydrogenation of benzene gives
Account for the following:
Copper has an exceptionally positive `"E"_("M"^(2+)//"M")^0` value.
Write the ionic equation for reaction of KI with acidified KMnO4.
Explain the use of different transition metals as catalysts.
