Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store
seo-qna
SearchIcon
banner

Select the correct order of paramagnetic character among following elements
A. Mn > Fe > Cr
B. Fe > Zn > Cr
C. Cr > Fe > Zn
D. Cr > Mn > Fe

Answer
VerifiedVerified
487.2k+ views
1 likes
like imagedislike image
Hint:Magnetic properties develop from the spin as well as the orbital angular momentum of electrons that are present in a compound. Molecular compounds which consist of one or more unpaired electrons are considered to be paramagnetic. The magnitude of para-magnetism is generally expressed as an effective magnetic moment.

Complete answer:
As we know, magnetic properties of any substance can be determined through its electron configuration. If the substance has unpaired electrons, then it is paramagnetic whereas if it comprises all paired electrons, then it is considered to be diamagnetic. So to identify the paramagnetic behaviour of the given elements, let us write their electronic configuration as mentioned below:
Cr (Atomic No. 24)4s13d5Fe (Atomic No. 26) 4s23d6Zn (Atomic No. 30)4s23d10Mn (Atomic No. 25)4s23d5
As visible from the electronic configuration, the number of unpaired electrons that are present in Cr, Fe, Zn and Mn are 6, 4, 0 and 5 respectively.
We know that greater is the number of the unpaired electrons in an element, greater will be the paramagnetic character of that element.
So, the order of the paramagnetic character among the given elements will be: Cr>Fe>Zn and Cr>Mn>Fe.

Hence, the correct answer is Option C and Option D.

Note:

Magnetic moments can also be calculated by obtaining the information of the number of unpaired electrons. The magnetic moment can be calculated with the following formula:
μ=n(n+2)
Here, n = number of unpaired electrons
Paramagnetic materials tend to possess a permanent magnetic moment or permanent dipole moment. Though, if we remove the applied magnetic field, the materials have the ability to lose their magnetism.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
calendar iconAcademic year 2025-26
language iconENGLISH
book iconUnlimited access till final school exam
tick
School Full course for CBSE students
PhysicsPhysics
ChemistryChemistry
MathsMaths
₹41,848 per year
Select and buy