Question:
What is the value of spin only magnetic moment for \( Mn^{2+} \) in BM?
What is the value of spin only magnetic moment for \( Mn^{2+} \) in BM?
Show Hint
If $n=5$, the magnetic moment is always "5 point something." Specifically, $\sqrt{35} = 5.92$.
Updated On: Apr 30, 2026
- 3.87
- 4.9
- 1.73
- 5.92
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Configuration
Mn ($Z=25$) is $[Ar] 3d^5 4s^2$. $Mn^{2+}$ is $[Ar] 3d^5$.
Step 2: Unpaired Electrons
In $3d^5$, there are 5 unpaired electrons ($n = 5$).
Step 3: Magnetic Moment Formula
$\mu = \sqrt{n(n+2)}$ BM. $\mu = \sqrt{5(5+2)} = \sqrt{35}$.
Step 4: Calculation
$\sqrt{35} \approx 5.92$ BM.
Final Answer:(D)
Mn ($Z=25$) is $[Ar] 3d^5 4s^2$. $Mn^{2+}$ is $[Ar] 3d^5$.
Step 2: Unpaired Electrons
In $3d^5$, there are 5 unpaired electrons ($n = 5$).
Step 3: Magnetic Moment Formula
$\mu = \sqrt{n(n+2)}$ BM. $\mu = \sqrt{5(5+2)} = \sqrt{35}$.
Step 4: Calculation
$\sqrt{35} \approx 5.92$ BM.
Final Answer:(D)
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Inorganic chemistry Questions
- Which among the following is NOT a mineral of chlorine?
- Which among the following is a mineral of Sulphur?
- P$_4$O$_{10}$ reacts with water to produce
- Which among the following oxides is amphoteric in nature?
- Which among the following is used as a source of oxygen in submarine in emergency breathing apparatus?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions