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प्रश्न
How is the variability in oxidation states of transition metals different from that of p-block elements?
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उत्तर
In transition elements, the variability in the oxidation state is due to the participation of (n – 1)d orbitals and ns orbitals. Thus, oxidation states differ by unity. For example, Fe3+ to Fe2+, Cr3+ to Cr2+ etc.
On the other hand, the variable oxidation states shown by some p-block elements differ by two units. For example, Sn4+ to Sn2+, Pb4+ to Pb2+.
संबंधित प्रश्न
Why is Sc3+ colourless while Ti3+ coloured? (Atomic number Sc = 21, Ti =22)
How would you account for the following: Transition metals form complex compounds.
Why is the highest oxidation state of a metal exhibited in its oxide or fluoride only?
In what way is the electronic configuration of the transition elements different from that of the non-transition elements?
How would you account for the following?
Transition metals and their compounds act as catalysts.
Identify the metal and justify your answer.
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It has been observed that first ionization energy of 5 d series of transition elements are higher than that of 3d and 4d series, explain why?
Account for the following:
Sc3+ is colourless whereas Ti3+ is coloured in an aqueous solution.
Which of the following ions has the electronic configuration 3d6?
(Atomic number: Mn = 25, Co = 27, Ni = 28)
In order to protect iron from corrosion, which one will you prefer as a sacrificial electrode, Ni or Zn? Why? (Given standard electrode potentials of Ni, Fe and Zn are -0.25 V, -0.44 V and -0.76 V respectively.)
