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प्रश्न
What are inner transition elements?
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उत्तर
Lanthanoids and actinoids are called inner transition elements because inner f-orbitals are progressively filled and the last electron goes to the anti-penultimate f-orbital.
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संबंधित प्रश्न
Explain why is Fe3+ more stable than Fe2+?
Why are Mn2+ compounds more stable than Fe2+ towards oxidation to their +3 state?
Which of the d-block elements may not be regarded as the transition elements?
Compare the stability of +2 oxidation state for the elements of the first transition series.
Give reasons:
E° value for the Mn3+/Mn2+ couple is much more positive than that for Fe3+/Fe2+.
Dissociation of H2S is suppressed in acidic medium.
The paramagnetic character in the 3d-transition series elements increases up to Mn and then decreases.
Transition metals with highest melting point is ____________.
Transition metals with lowest melting point is ______.
Electronic configuration of Mn2+ is ____________.
Transition elements form binary compounds with halogens. Which of the following elements will form \[\ce{MF3}\] type compounds?
(i) \[\ce{Cr}\]
(ii) \[\ce{Co}\]
(iii) \[\ce{Cu}\]
(iv) \[\ce{Ni}\]
Although fluorine is more electronegative than oxygen, but the ability of oxygen to stabilise higher oxidation states exceeds that of fluorine. Why?
Identify the metal and justify your answer.
\[\ce{MO3F}\]
Which of the following maxm magnetic moment?
Which of the following species has maximum magnetic momentum?
Which of the following ions acts as a typical transition metal ion?
In the ground state of atomic Fe (Z = 26), the spin-only magnetic moment is ______ × 10-1 BM.
(Round off to the nearest integer).
[Given: `sqrt3 = 1.73, sqrt2 = 1.41`]
A transition element X has an electronic configuration [Ar]4s23d3. Predict its likely oxidation states.
Describe the oxidising action of potassium dichromate and write the ionic equation for its reaction with H2S.
Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:
Oxidation states
