For paramagnetic materialsa)orbital and spin magnetic moments of the electrons are of the order of bohr magnetonb)orbital magnetic moments of the electrons are zeroc)orbital and spin magnetic moments of the electrons are less than zerod)spin magnetic moments of the electrons are zeroCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Paramagnetic materials are those materials that are weakly attracted by a magnetic field. They have unpaired electrons in their outermost shell, which causes a net magnetic moment due to the spin and orbital motion of the electrons.

Orbital and Spin Magnetic Moments:
- Orbital magnetic moment: It is the magnetic moment of an electron due to its motion around the nucleus.
- Spin magnetic moment: It is the magnetic moment of an electron due to its intrinsic spin.

Order of Bohr Magneton:
- Bohr magneton is a unit of magnetic moment, which is equal to approximately 9.27 x 10^-24 joules per tesla.
- The orbital and spin magnetic moments of electrons in paramagnetic materials are of the order of Bohr magneton.

Explanation of Option A:
- Option A states that the orbital and spin magnetic moments of electrons in paramagnetic materials are of the order of Bohr magneton.
- This is correct because the unpaired electrons in paramagnetic materials have a net magnetic moment due to their spin and orbital motion, which is of the order of Bohr magneton.
- This magnetic moment causes the paramagnetic material to be weakly attracted to a magnetic field.

Other Options:
- Option B states that the orbital magnetic moments of electrons in paramagnetic materials are zero, which is incorrect because the unpaired electrons have an orbital magnetic moment.
- Option C states that the orbital and spin magnetic moments of electrons in paramagnetic materials are less than zero, which is incorrect because magnetic moments cannot be negative.
- Option D states that the spin magnetic moments of electrons in paramagnetic materials are zero, which is incorrect because the unpaired electrons have a spin magnetic moment.

Answer

Para magnetic means there should  be presence of magnetic moment which is due to unpaired electrons. one is called spin only and the other orbital magnetic moment. Both are non-zero for para material.

Answer

Option(a)becoz--->

These are metals that are weakly attracted to magnets. They include aluminum, gold, and copper. The atoms of these substances contain electrons most of which spin in the same direction .but not all . This gives the atoms some polarity.

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