Magnetic Moment Examples

Q.

The most stable carbonium ion among the following is

1. 

2. 

3. 

4. 

Q. What is pseudo berry rotation in chemistry?

Q. Specify the coordination geometry around and hybridization of $N\&B$ atoms in 1:1 complex of $B{F}_3$ & $N{H}_3$

1. N:tetrahedral, ; B: tetrahedral,

2. N: pyramidal, sp³; B: pyramidal, sp³

3. N: pyramidal, sp³; B: planar, sp³

4. N: pyramidal, sp³; B: tetrahedral, sp³

Q. which of following is non-planar: (1) (BeCl2)2 (2) \lbrack Pt(CN)4\rbrack^-2 (3) SO3 (4) XeO3

Q. The rate of diffusion of methane at a given temperature is twice that of a gas X. The molecular weight of X is- (1) 64.0 ( 2 ) 32.0 (3) 4.0 (4) 8.0

Q. The spin only magnetic moment of $Fe$ in the complex $\left[Fe\right(CN{)}_6{]}^{3-}$ in BM is:

1. 1.73 BM
2. 1.414 BM
3. 2.82 BM
4. 2 BM

Q. conditions for a compound to be planar

Q. The complex ${\left[Ni{\left(CN\right)}_4\right]}^{2-}$ is diamagnetic and the complex ${\left[NiC{l}_4\right]}^{2-}$ is paramagnetic. What can you conclude about their molecular geometries?

1. Both complex have square planar geometries
2. Both complexes have tetrahedral geometries
3. ${\left[NiC{l}_4\right]}^{2-}$ has a square planar geometry while ${\left[Ni\right(CN)}_4{]}^{2-}$ has a tetrahedral geometry
4. ${\left[NiC{l}_4\right]}^{2-}$ has a tetrahedral geometry while ${\left[Ni{\left(CN\right)}_4\right]}^{2-}$ has a square planar geometry

Q.

Hexafluoroferrate (III) ion is an outer orbital complex. The number of unpaired electrons present in Fe is

1. 1

2. 5

3. 4

4. None of these

Q.

Among $A{l}_2{O}_3,Si{O}_2,P_2{O}_3,andS{O}_3$ the correct order of acid strength is

1. 

2. 

3. 

4. 

Q. 34. In the presence of external magnetic field, f sub shell is (1) 5 fold degenerate (2) 3 fold degenerate (3) 7 fold degenerate (4) Non degenerate

Q. what is a nuteral compound?

Q. the molecular speed of gaseous molecules are ana\log ues to thosr of rifle bullets; why is then odour of the gaseous molecules not detected so fast?

Q. how to identify nucleophillicity order

Q. Sort the following according to the decreasing order of magnetic moments.

1. $Ni(CO{)}_4$
2. ${\left[\mathrm{Ni}\right(N{H}_3{)}_6]}^{2+}$
3. ${\left[\mathrm{Mn}\right(\mathrm{CN}{)}_6]}^{4-}$
4. ${\left[\mathrm{Mn}\right(\mathrm{Cl}{)}_4]}^{-2}$

Q. Which of the following compound(s) is/are paramagnetic?

1. $\left[Ni\right(CO{)}_4]$
2. $K_2\left[Ni\right(CN{)}_4]$
3. $K_3\left[Co{F}_6\right]$
4. $\left[Cr\right(N{H}_3{)}_6]C{l}_3$

Q. Find the number of unpaired electrons in the $t_{2g}$ set of $d$-orbitals of $\left[Mn\right(H_{2}O{)}_6{]}^{2+}$

Q. What are polar compounds? What is dipole? What is helix?

Q.

Among the following ions which one has the highest paramagnetism?

1. $\left[Cr\right(H_{2}O{)}_6{]}^{3+}$
2. $\left[Fe\right(H_{2}O{)}_6{]}^{2+}$
3. $\left[Cu\right(H_{2}O{)}_6{]}^{2+}$
4. $\left[Zn\right(H_{2}O{)}_6{]}^{2+}$

Q. Sort the following according to the decreasing order of magnetic moments.

1. $Ni(CO{)}_4$
2. ${\left[\mathrm{Ni}\right(N{H}_3{)}_6]}^{2+}$
3. ${\left[\mathrm{Mn}\right(\mathrm{CN}{)}_6]}^{4-}$
4. ${\left[\mathrm{Mn}\right(\mathrm{Cl}{)}_4]}^{-2}$

Q. the rate of diffusion of hydrogen is root 20 times the rate of diffusion of a sample containing oxygen and ozone . the percentage(by moles) of oxygen in the sample is

Q. Which of the following has nonlinear structure ? (1) Ag(NH_3)_2^+ (2) HgCl_2 (3) SnCl_2 (4) BeCl_2

Q. Among the following ions which has highest paramagnetism

1. $\left[Cr\right(H_{2}O){]}^{3+}$
2. $\left[Fe\right(H_{2}O{)}_6{]}^{2+}$
3. $\left[Cu\right(H_{2}O{)}_6{]}^{2+}$
4. $\left[Zn\right(H_{2}O{)}_6{]}^{2+}$

Q. both propane and CO2 diffuse at same rate under identical conditions of temperature and pressure. why?