Quantum Numbers

Q.

What is the shorthand electron configuration of Xe?

Q.

The following quantum numbers are possible for how many orbital(s): $\mathrm{n}=3,\mathrm{l}=2,\mathrm{m}=+2$

1. $4$

2. $3$

3. $1$

4. $2$

Q.

The number of orbitals associated with quantum number $\mathrm{n}=5$, $\mathrm{ms}=+\frac{1}{2}$ is :

1. $11$

2. $15$

3. $25$

4. $50$

Q.

What is one possible set of quantum numbers for a $4d$ orbital?

Q.

Principal, azimuthal and magnetic quantum numbers are respectively related to

1. None of the above

2. Size, shape and orientation

3. Shape, size and orientation

4. Size, orientation and shape

Q.

How Many Electrons Are In Each Orbital?

Q.

What is the electron configuration of ${\mathrm{F}}^{-}$?

Q.

If the value of azimuthal quantum number is 3, the possible values of magnetic quantum numbers would be:

1. 0, 1, 2, 3

2. 0, -1, -2, -3

3. 3, -2, -1, 0, +1, +2, +3

4. 3, -2, -1, +1, +2, +3

Q.

Why there are no 1p orbitals?

Q. Which quantum number is not related to Schrodinger equation?

1. Principal
2. Azimuthal
3. Magnetic
4. Spin

Q. The number of orbitals of g subshell are :

1. 5
2. 7
3. 9
4. 11

Q. Which of the following pairs of atomic numbers represents elements belong to the same group?

1. 11, 20
2. 14, 33
3. 12, 30
4. 13, 31

Q. Which of the following statements regarding an orbital is correct?

1. An orbital is a definite trajectory around the nucleus in which electrons can move
2. An orbital always has a spherical trajectory
3. An orbital is a region around the nucleus where the probability of finding all the electrons is 90% to 95%
4. An orbital is characterized by three distinct quantum numbers n, l and m

Q. 33 Ratio of wavelength of matter waves associated with proton and alpha particle accelerated by the same potential difference??

Q. The correct statement regarding the third orbit of hydrogen atom is:

1. It can accommodate maximum of nine electrons
2. It contains nine degenerate atomic orbitals
3. It contains nine atomic orbitals having three sets of degeneracy
4. It contains nine sub-shells

Q. how to calculate mass of electron in amu

Q.

$\mathrm{E}{°}_{{\mathrm{M}}^{2+}/\mathrm{M}}$ has a positive value for which of the following elements of 3d transition series?

1. $\mathrm{Cu}$

2. $\mathrm{Zn}$

3. $\mathrm{Cr}$

4. $\mathrm{Co}$

Q.

Consider structures I to VII and answer the question

$I$

$II$

$III$

$IV$

$V$

$VI$

$VII$

Identify the pairs of compounds that represents chain isomerism.

Q. Gaseous metal ion M2+ has 5 unpaired electrons. What is the atomic number?

Q. The magnitude of the orbital angular momentum of an electron is given by $L=\frac{\sqrt{5}h}{\pi }$. How many orbitals of this kind are possible for the subshell?

1. 4
2. 5
3. 11
4. 9

Q. Maximum number of electrons in an atom that can have the quantum numbers $n=4,m_e=+1$ is:

1. 3
2. 5
3. 6
4. 8

Q. Number of orbitals represented by $n=3,l=2$ and $m=+2$ is:

1. $3$
2. $1$
3. $5$
4. $7$

Q. If n and l are respectively the principal and azimuthal quantum numbers, then the expressions for calculating the total number of electrons in any shell is:

1. $\sum _{l=1}^{l=n}$ $2(2l+1)$
2. $\sum _{l=1}^{l=n-1}$ $2(2l+1)$
3. $\sum _{l=0}^{l=n+1}$ $2(2l+1)$
4. $\sum _{l=0}^{l=n-1}$ $2(2l+1)$

Q. 28.What is the ratio of the de-broglie wave lengths for electrons accelerated throughy200 volts and 50 volts

Q. Identify the subshell in which electrons with the following quantum numbers are found :
1. n = 4, l = 2
2. n = 6, l = 0

1. 4p, 6s respectively
2. 4d, 6p respectively
3. 6s, 4p respectively
4. 4d, 6s respectively

Q. Which shell would be the first to have 'g' subshell?

1. $6^{th}$
2. $3^{rd}$
3. $4^{th}$
4. $5^{th}$

Q. Calculate the magnitude of spin angular momentum of an electron.

1. $\frac{\sqrt{3}h}{4\pi }$
2. $\frac{\sqrt{h}}{4\pi }$
3. $\frac{\sqrt{3}h}{\pi }$
4. $\frac{\sqrt{h}}{\pi }$

Q. The cause of periodicity of properties is

1. Increasing atomic radius

2. Number of electrons in the valency orbit

3. The recurrence of similar outer electronic configuration

4. Increasing atomic weights

Q. For principle quantum number n = 4, the total number of orbitals having l = 3 is:

1. 3
2. 5
3. 7
4. 9

Q.

(i) An atomic orbital has n = 3. What are the possible values of l and m_l ?

(ii) List the quantum numbers (m_l and l) of electrons for 3d orbital.

(iii) Which of the following orbitals are possible?

1p, 2s, 2p and 3f