Magnetic Properties

Q. The type of hybridisation and magnetic property of the complex $[MnC{l}_6{]}^{3-}$, respectively, are

1. $d^{2}s{p}^3$ and diamagnetic
2. $d^{2}s{p}^3$ and paramagnetic
3. $s{p}^3{d}^2$ and paramagnetic
4. $s{p}^3{d}^2$ and diamagnetic

Q. Magnetic moment 2.83 BM is given by which of the following ions?
(At. nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28)

1. $T{i}^{3+}$
2. $N{i}^{2+}$
3. $C{r}^{3+}$
4. $M{n}^{2+}$

Q.

Which of the following statements is not true?

(a) Paramagnetic substances are weakly attracted by magnetic field

(b) Ferromagnetic substances cannot be magnetised permanently

(c) The domains in antiferromagnetic substances are oppositely oriented with respect to each other

(d) Pairing of electrons cancels their magnetic moment in the diamagnetic substances

Q.

Is titanium magnetic or non-magnetic?

Q. The magnetic moment of $C{r}^{3+}$ is

Q. Why does fluorine show positive oxidation state in HOF?

Q.

What is pseudo inert gas configuration?

Q.

Is magnesium oxide magnetic?

Q.

Which of the following statements are correct ?

(a) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic

(b) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic

(c) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other

(d) In ferromagnetic substances, all the domains get oriented in the direction of magnetic filed and remain as such even after removing magnetic field

Q. What is magnetic moment of $C{e}^{3+}$ ion? (Atomic number of $Ce$ is 58)

1. 1.73 BM
2. 2.23 BM
3. 1.414 BM
4. 2.64 BM

Q.

What are ferromagnetic substance? Give one example.

Q.

Write the atomic number of the element present in the third period and seventeenth group of the periodic table.

Q.

In a permanent magnet at room temperature,

(a) The magnetic moment of each molecule is zero
(b) The individual molecules have a non-zero magnetic moment which is all perfectly aligned
(c) Domains are partially aligned
(d) Domains are all perfectly aligned

Q. The calculated spin magnetic moment of Fe(II) is

1. 6.90 B.M.
2. 0
3. 4.90 B.M.
4. 5.91 B.M.

Q.

Explain the following with suitable examples:

(i) Ferromagnetism

(ii)Paramagnetism

(iii)Ferrimagnetism

(iv)Antiferromagnetism

(v)12-16 and 13-15 group compounds.

Q.

For a $d{}^4$metal ion in an octahedral field, the correct electronic configuration is

Q.

Amongst the following ions which one has the highest magnetic moment value?

(i) [Cr(H₂O)₆]³⁺

(ii) [Fe(H₂O)₆]²⁺

(iii) [Zn(H₂O)₆]²⁺

Q.

A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because ..........

(a) all the domains get oriented in the direction of a magnetic field

(b) all the domains get oriented in the direction opposite to the direction of a magnetic field

(c) domains get oriented randomly

(d) domains are not affected by a magnetic field

Q.

Which of the following ion has largest size?

1. ${\mathrm{F}}^{-}$

2. ${\mathrm{Cs}}^{+}$

3. ${\mathrm{Al}}^{+3}$

4. ${\mathrm{O}}^{-2}$

Q.

Which one ${\mathrm{Cu}}^{2+}$or ${\mathrm{Zn}}^{2+}$is diamagnetic and why?

Q. Which of the following compounds is metallic and ferromagnetic?

1. $Mn{O}_2$
2. $Ti{O}_2$
3. $Cr{O}_2$
4. $V{O}_2$

Q.

Give the application of actinides.

Q.

What happens above Curie temperature?

Q. In the ground state of cobalt atom (Z=27), number of unpaired electrons and the magnetic nature of cobalt are respectively.

1. 2, diamagnetic
2. 2, paramagnetic
3. 3, diamagnetic
4. 3, paramagnetic

Q. Find the oxidation no. Of Sulfur
from ( ch3)2SO.
2.oxidation no. Of carbon
C3o2

Q. The spin-only magnetic moment value of the
compound with strongest oxidizing ability among
$Mn{F}_4,Mn{F}_3$ and $Mn{F}_2$ is B.M. [nearest integer]

Q.

Add prefixes or suffixes to make verb forms Danger

Q.

How to find oxidation number of Fe in Na₄[Fe(CN)6]?

Q. Assertion: The highest oxidation state of osmium is $+8$.

Reason: Osmium is a $5$d-block element.

1. Assertion is not true but reason is true.
   
2. Both assertion and reason are false.
   
3. Both assertion and reason are true but reason is not the correct explanation of assertion.
   
4. Both assertion and reason are true, and reason is the correct explanation of the assertion.
   

Q. why is Be not an alkaline earth metal sir?