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प्रश्न
What may be the stable oxidation state of the transition element with the following d electron configuration in the ground state of its atom?
3d3
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उत्तर
The stable oxidation state will be +5 due to the outer electronic configuration 3d3 4s2 (+2, +3, +4, +5).
संबंधित प्रश्न
Why +2 oxidation state of manganese is more stable?
The \[\ce{E^{\circ}_{(M^{2+}/M)}}\] value for copper is positive (+0.34 V). What is possible reason for this? (Hint: consider its high ΔaH° and low ΔhydH°)
For M2+/M and M3+/M2+ systems, the E° values for some metals are as follows:
| Cr2+/Cr | −0.9 V |
| Mn2+/Mn | −1.2 V |
| Fe2+/Fe | −0.4 V |
| Cr3/Cr2+ | −0.4 V |
| Mn3+/Mn2+ | +1.5 V |
| Fe3+/Fe2+ | +0.8 V |
Use this data to comment upon:
- The stability of Fe3+ in acid solution as compared to that of Cr3+ or Mn3+ and
- the ease with which iron can be oxidised as compared to a similar process for either chromium or manganese metal.
Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?
What are inner transition elements?
Write the factors which are related to the colour of transition metal ions.
Write the formula of an oxo-anion of Chromium (Cr) in which it shows the oxidation state equal to its group number
How would you account for the following?
Transition metals and their compounds act as catalysts.
Why do transition elements show variable oxidation states ? In 3d series (Sc to Zn), which elements shows the maximum number of oxidation state and why ?
Which of the following statements is not correct?
Transition elements show magnetic moment due to spin and orbital motion of electrons. Which of the following metallic ions have almost same spin only magnetic moment?
(i) \[\ce{Co^{2+}}\]
(ii) \[\ce{Cr^{2+}}\]
(iii) \[\ce{Mn^{2+}}\]
(iv) \[\ce{Cr^{3+}}\]
The halides of transition elements become more covalent with increasing oxidation state of the metal. Why?
Reactivity of transition elements decreases almost regularly from Sc to Cu. Explain.
The product of oxidation of I– with \[\ce{MnO^{-}4}\] in alkaline medium is:-
The complex showing a spin-span magnetic moment of 2.82 B.M. is :-
Agcl is soluble in NH4OH. The solubility is due to the information of:-
A complex in which dsp2 hybridisation takes place is ______.
The compounds of \[\ce{Ti^4+}\] ions are colourless due to ______.
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:
Atomic sizes
