Advertisements
Advertisements
Question
Which of the following ions show higher spin only magnetic moment value?
(i) \[\ce{Ti^3+}\]
(ii) \[\ce{Mn2+}\]
(iii) \[\ce{Fe2+}\]
(iv) \[\ce{Co3+}\]
Solution
(ii) \[\ce{Mn2+}\]
(iii) \[\ce{Fe2+}\]
Explanation:
\[\ce{Mn^2+ (3d^5)}\] and \[\ce{Fe^2+ (3d^6)}\] have 5 and 4 unpaired electrons hence higher values of spin only magnetic moment as compared to \[\ce{Ti^3+ (3d^1)}\] and \[\ce{Co^2+ (3d^7)}\].
APPEARS IN
RELATED QUESTIONS
Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?
For M2+/M and M3+/M2+ systems, the EΘ 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+.
What is meant by 'disproportionation'? Give two examples of disproportionation reaction in aqueous solution.
What are inner transition elements?
Explain why transition metals and their compounds act as a catalyst.
When \[\ce{KMnO4}\] solution is added to oxalic acid solution, the decolourisation is slow in the beginning but becomes instantaneous after some time because ______.
Highest oxidation state of manganese in fluoride is \[\ce{+4 (MnF4)}\] but highest oxidation state in oxides is \[\ce{+7 (Mn2O7)}\] because ______.
Why first ionisation enthalpy of Cr is lower than that of Zn?
The orientation of an atomic orbital is governed by
Give two similarities in the properties of Sc and Zn.
