Advertisements
Advertisements
Question
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of \[\ce{Cr^{3+}}\] ion is ______.
Options
2.87 B.M.
3.87 B.M.
3.47 B.M.
3.57 B.M.
Solution
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of \[\ce{Cr^{3+}}\] ion is 3.87 B.M..
Explanation:
\[\ce{Cr -> (Z = 24)}\]
\[\ce{Cr^{3+} -> (Z = 21)}\]
\[\ce{1s^2 2s^2 2P^6 3s^2 3p^6 3d^3 4s^0}\]
n = 3(3 unpaired electrons)
`mu = sqrt(n(n + 2))`
`mu = sqrt(3(3 + 2))`
`mu = sqrt(3(5))`
`mu = sqrt(15)` = 3.87 B.M.
APPEARS IN
RELATED QUESTIONS
Describe the oxidising action of potassium dichromate and write the ionic equation for its reaction with iodide.
Account for the following :
Ti4+ is colourless whereas V4+ is coloured in an aqueous solutions.
The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of transition element, which shows highest magnetic moment.
Which of the following statements is not correct?
Which of the following ions show higher spin only magnetic moment value?
(i) \[\ce{Ti^3+}\]
(ii) \[\ce{Mn2+}\]
(iii) \[\ce{Fe2+}\]
(iv) \[\ce{Co3+}\]
Answer the following question:
Which element of the first transition series has highest second ionisation enthalpy?
Match List - I with List - II.
| List - I | List - II | ||
| (a) | \[\ce{[Fe(CN)6]^3-}\] | (i) | 5.92 BM |
| (b) | \[\ce{[Fe(H2O)6]^3+}\] | (ii) | 0 BM |
| (c) | \[\ce{[Fe(CN)6]^4-}\] | (iii) | 4.90 BM |
| (d) | \[\ce{[Fe(H2O)6]^2+}\] | (iv) | 1.73 BM |
Choose the correct answer from the options given below.
Which of the following ions acts as a typical transition metal ion?
Which property of transition metals enables them to behave as catalysts?
The given graph shows the trends in melting points of transition metals:
Explain the reason why Cr has the highest melting point and manganese (Mn) has a lower melting point.
