What are paramagnetic substances? Give examples. - Vidyadip

Question

What are paramagnetic substances? Give examples.

✓

Answer

(1) The magnetic properties of a substance arise due to the presence of electrons.
(2) An electron while revolving around the nucleus, also spins around its own axis and generates a magnetic moment and magnetic properties.
(3) If an atom or a molecule contains one or more unpaired electrons spinning in same direction, clockwise or anticlockwise, then the substance is associated with net magnetic moment and magnetic properties. They experience a net force of attraction when placed in the magnetic field. This phenomenon is called paramagnetism and the substance is said to be paramagnetic.
For example, $O _2, Cu ^{2+}, Fe ^{3+}, Cr ^{3+}, NO$, etc.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in brief." from Solid State→Solid State — all question types→Chemistry STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Answer the following question.

What are ligands?

Calculate lattice energy of crystalline sodium chloride from the following data :

$\begin{aligned}
& \Delta_{ f } H^0_{ NaCl _{( s )}}=-411 kJ mol ^{-1}; \\
& \Delta_{( sub )} H_{ Na _{( s )}}^0=109 kJ mol ^{-1} \text {; } \\
& \Delta_{\text {ion }} H_{ Na }^0=496 kJ mol ^{-1} \text {} \\ \end{aligned}$
Bond enthalpy of $Cl _2=244 kJ mol ^{-1}$;
$\Delta_{ eg } H_{ Cl _{( g )}}^0=-348 kJ mol ^{-1}$

Define ligand. Write four postulates of Werner's theory.

What are soaps ? How are they prepared ?

What are aliphatic ketones? How are they classified?

Write two uses and two properties of polythene.

Give the structures of the following compounds:
(1) 2-Methylpropanal
(2) Pentan-3-one
(3) Methanal

What are the similarities between lanthanides and actinides.

What is the action of hot and concentrated sulphuric acid on the following :
(i) Carbon
(ii) Sulphur
(iii) Phosphorus
(iv) Zn
(v) Cu
(vi) Haloacid (HX)?

A quantity of $0.3 g$ of $Cu$ was deposited from $CuSO _4$ solution by passing $4 A$ through the solution for $3.8 min$. Calculate the value of Faraday constant. (Atomic mass of $Cu =63.5 g mol ^{-1}$ )