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प्रश्न
To what extent do the electronic configurations decide the stability of oxidation states in the first series of the transition elements? Illustrate your answer with examples.
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उत्तर
- The ions in the oxidation state, in which the ions have fully filled or half-filled d shells, are more stable.
- For example, the +2 state of Mn is more stable than its other oxidation states.
- Because Mn2+ has a half-filled 3d5 shell. Similarly, the +2 state of Zn is its most stable state because it has a fully filled 3d10 shell.
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संबंधित प्रश्न
Which metal in the first transition series (3d series) exhibits + 1 oxidation state most frequently and why?
In 3d series (Sc to Zn), which element has the lowest enthalpy of atomisation and why?
Which of the 3d series of the transition metals exhibits the largest number of oxidation states and why?
Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?
Give reasons: Sc3+ is colourless in aqueous solution whereas Ti3+ is coloured.
Why do transition metals exhibit higher enthalpy of atomization?
Maximum oxidation state is shown by ____________.
Electronic configuration of a transition element X in +3 oxidation state is [Ar]3d5. What is its atomic number?
EΘ of Cu is + 0.34V while that of Zn is – 0.76V. Explain.
Identify the metal and justify your answer.
\[\ce{MO3F}\]
Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds.
A complex in which dsp2 hybridisation takes place is ______.
Which of the following transition metal is not coloured?
Why is the `"E"_(("V"^(3+)//"V"^(2+)))^"o"` value for vanadium comparatively low?
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`]
The oxidation state of Fe in [Fe(CO)5] is ______.
Which of the following transition metals shows +1 and +2 oxidation states?
Consider the following standard electrode potential values:
\[\ce{Sn^{2+}_{ (aq)} + 2e^- -> Sn_{(s)}}\]; E0 = −0.14 V
\[\ce{Fe^{3+}_{ (aq)} + e^- -> Fe^{2+}_{ (aq)}}\]; E0 = +0.77 V
What is the cell reaction and potential for the spontaneous reaction that occurs?
Give a reason for the following.
Some transition metals and their compounds get attracted towards the magnetic field.
‘Spin only’ magnetic moment is the same for which of the following ions?
- Ti3+
- Cr2+
- Mn2+
- Fe2+
- Sc3+
Choose the most appropriate answer from the options given below:
