Assertion(A): The energy of an electron is largely determined by its principal quantum number.
Reason(R): Principal quantum number is a measure of the most possible distance of finding the electron around the nucleus.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.

 
Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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The correct statement(s) among the following regarding quantum numbers is -

a. Angular quantum number determines the three-dimensional shape of the orbital 
b. The principal quantum number determines the orientation and energy of the orbital
c. Magnetic quantum number determines the size of the orbital
d. Spin quantum number of an electron determines the orientation of the spin of the electron relative to the chosen axis

1. (a), (d)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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The graph that represents the probability density vs distance of the electron from the nucleus for 2s orbital is -

1. 

2. 

3. 

4. 

 

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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Match the following:

Column I

Column II

(a) n = 2, l =1

i = 4s

(b) n = 4, l = 0

ii = 2p

(c) n = 5, l = 3

iii = 3d

(d) n = 3, l = 2

iv = 5f

1. a = iv; b = ii; c = i; d = iii

2. a = ii; b = iii; c = iv; d = i

3. a = ii; b = i; c = iv; d = iii

4. a = iii; b = ii; c = i; d = iv

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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Match the following.

Column I

Column II

A. Photon

1. Value is 4 for N-shell

B. Electron

2. Probability density

C. ψ2

3. Always positive value

D. Principle quantum number n

4. Exhibits both momentum and wavelength

Options:   A   B   C   D 
1.  4 4  2,3   1,3 
2.  1 2  3  4
3.  2,1  4  3  2,3
4.  4 5  3  2


 

 

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
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Match the quantum numbers with the information provided by them:

Quantum number Information provided
A. Principal quantum number 1. Orientation of the orbital
B. Azimuthal quantum number 2. Energy and size of orbital
C. Magnetic quantum number 3. Spin of electron
D. Spin quantum number 4. Shape of the orbital

Codes
 
A B C D
1. 2 4 1 3
2. 1 2 3 4
3. 1 4 3 2
4. 4 1 3 2
Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 90%
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