Question

47. Example for para-magnetic Materials is
(A) alkali metals
(B) super conductors
(C) transition metals
(D) ferrites​

Answer 1

Answer:

(A) alkali metals

Explanation:

hope it will help you

Answer 2

Answer:
The answer to this question is alkali metal
Explanation:
To answer this question , we first need to know what is Para magnetism.
Para magnetism is a form of magnetism in which materials get weakly attracted to an external applied magnetic field, and form internal, induced magnetic fields in the direction of the applied magnetic field. It is due to the presence of unpaired electrons in the material, so most atoms with incompletely filled atomic orbitals are paramagnetic.
That is why ,All the alkali metals are paramagnetic because of the presence of one valence electron in the valence shell. For example, any of the six chemical elements that make up Group 1 of the periodic table , namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). All of these materials have an unpaired electron and therefore they are para-magnetic materials.
Hence option (A) is correct.