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प्रश्न
Why is Mn2+ ion more stable than Fe2+ ion?
(Atomic numbers of Mn = 25 and Fe = 26)
उत्तर
Electronic configuration of Mn2+ = [Ar]4s03d5 and Fe2+ = [Ar]4s03d6
Mn2+ ions have half-filled d-orbitals, making them more stable. Fe2+ complexes are slightly less stable since their third orbital contains six electrons.
As a result, they frequently achieve a stable 3d5 structure while losing one electron (from Fe3+).
संबंधित प्रश्न
What are lanthanoids?
Account for the following :
Zr and Hf have almost similar atomic radii.
The chemistry of the actinoid elements is not so smooth as that of the Lanthanoids. Justify this statement by giving some examples from the oxidation state of these elements.
General electronic configuration of actinoids is `(n-2)f^(1-14)(n - 1)d^(0-2)ns^2`.Which of the following actinoids have one electron in 6d orbital?
(i) U (Atomic no. 92)
(ii) Np (Atomic no.93)
(iii) Pu (Atomic no. 94)
(iv) Am (Atomic no. 95)
On the basis of Lanthanoid contraction, explain the following:
Radii of 4d and 5d block elements.
Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of _______.
Mischmetal is an alloy consisting mainly of ______.
Write a note on lanthanoids.
State a reason for the following:
La(OH)3 is more basic than Lu(OH)3.
Assertion: There is a continuous increase in size among Lanthanoids with an increase in atomic number.
Reason: Lanthanoids do not show Lanthanoid contraction.
