Arrange the following metal complex/ compounds in the increasing order of spin only magnetic moment.
Arrange the following metal complex/ compounds in the increasing order of spin only magnetic moment. Presume all the three, high spin system.
(Atomic numbers $\mathrm{Ce}=58, \mathrm{Gd}=64$ and $\mathrm{Eu}=63 .$ )
(a) $\left(\mathrm{NH}_{4}\right)_{2}\left[\mathrm{Ce}\left(\mathrm{NO}_{3}\right)_{6}\right]$
(b) $\mathrm{Gd}\left(\mathrm{NO}_{3}\right)_{3}$ and
(c) $\mathrm{Eu}\left(\mathrm{NO}_{3}\right)_{3}$
$(\mathrm{b})<(\mathrm{a})<(\mathrm{c})$
(c) $<(\mathrm{a})<(\mathrm{b})$
(a) $<(b)<(c)$
(a) $<($ c $)<($ b $)$
Correct Option: , 4
(a) ${ }_{58} \mathrm{Ce} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^{2} 5 \mathrm{~d}^{0} 6 \mathrm{~s}^{2}$
In complex $\mathrm{Ce}^{4+} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^{0} 5 \mathrm{~d}^{0} 6 \mathrm{~s}^{0}$
there is no unpaired electron so $\mu_{\mathrm{m}}=0$
(b) ${ }_{64} \mathrm{Gd}^{3+} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^{7} 5 \mathrm{~d}^{0} 6 \mathrm{~s}^{0}$
contain seven unpaired electrons so,
$\mu_{\mathrm{m}}=\sqrt{7(7+2)}=\sqrt{63}$ B.M.
(c) ${ }_{63} \mathrm{Eu}^{3+} \rightarrow\left[{ }_{54} \mathrm{Xe}\right] 4 \mathrm{f}^{6} 5 \mathrm{~d}^{0} 6 \mathrm{~s}^{0}$
contain six unpaired electron
so, $\mu_{\mathrm{m}}=\sqrt{6(6+2)}=\sqrt{48}$ B.M.
Hence, order of spin only magnetic movement
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All Study Material
- JEE Main
- Exam Pattern
- Previous Year Papers
- PYQ Chapterwise
- Physics
- Kinematics 1D
- Kinemetics 2D
- Friction
- Work, Power, Energy
- Centre of Mass and Collision
- Rotational Dynamics
- Gravitation
- Calorimetry
- Elasticity
- Thermal Expansion
- Heat Transfer
- Kinetic Theory of Gases
- Thermodynamics
- Simple Harmonic Motion
- Wave on String
- Sound waves
- Fluid Mechanics
- Electrostatics
- Current Electricity
- Capacitor
- Magnetism and Matter
- Electromagnetic Induction
- Atomic Structure
- Dual Nature of Matter
- Nuclear Physics
- Radioactivity
- Semiconductors
- Communication System
- Error in Measurement & instruments
- Alternating Current
- Electromagnetic Waves
- Wave Optics
- X-Rays
- All Subjects
- Physics
- Motion in a Plane
- Law of Motion
- Work, Energy and Power
- Systems of Particles and Rotational Motion
- Gravitation
- Mechanical Properties of Solids
- Mechanical Properties of Fluids
- Thermal Properties of matter
- Thermodynamics
- Kinetic Theory
- Oscillations
- Waves
- Electric Charge and Fields
- Electrostatic Potential and Capacitance
- Current Electricity
- Thermoelectric Effects of Electric Current
- Heating Effects of Electric Current
- Moving Charges and Magnetism
- Magnetism and Matter
- Electromagnetic Induction
- Alternating Current
- Electromagnetic Wave
- Ray Optics and Optical Instruments
- Wave Optics
- Dual Nature of Radiation and Matter
- Atoms
- Nuclei
- Semiconductor Electronics: Materials, Devices and Simple Circuits.
- Chemical Effects of Electric Current,