Question:
The set having ions which are coloured and paramagnetic both is -
$\mathrm{Cu}^{2+}, \mathrm{Cr}^{3+}, \mathrm{Sc}^{+}$
$\mathrm{Cu}^{2+}, \mathrm{Zn}^{2+}, \mathrm{Mn}^{4+}$
$\mathrm{Sc}^{3+}, \mathrm{V}^{5+}, \mathrm{Ti}^{4+}$
$\mathrm{Ni}^{2+}, \mathrm{Mn}^{7+}, \mathrm{Hg}^{2+}$
Correct Option: 1
Solution:
$\left.\begin{array}{l}\mathrm{Cu}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{9} 4 \mathrm{~s}^{0} \\ \mathrm{Cr}^{3+}:[\mathrm{Ar}] 3 \mathrm{~d}^{3} 4 \mathrm{~s}^{0} \\ \mathrm{Sc}^{+}:[\mathrm{Ar}] 3 \mathrm{~d}^{1} 4 \mathrm{~s}^{1}\end{array}\right] \begin{aligned}&\text { All are coloured and } \\&\text { paramagnetic due to } \\&\text { presence of unpaired electrons }\end{aligned}$
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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,
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