Various Quantum Numbers (Principal, Angular Momentum, and Magnetic Quantum Number, and their Significance) NEET Questions

Physical Chemistry - Atomic Structure

Various Quantum Numbers (Principal, Angular Momentum, and Magnetic Quantum Number, and their Significance) MCQ Questions


7.
For hydrogen atom, the energy of an orbital depends on:
A.
Only l
B.
Both n and l
C.
Only n
D.
n, l, and ml
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ANSWER :
C. Only n
8.
The total number of orbitals in the N shell (n=4) is:
A.
9
B.
25
C.
32
D.
16
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ANSWER :
D. 16
9.
The principal quantum number 'n' takes values:
A.
Only fractional values
B.
1, 2, 3, 4, ... (positive integers only)
C.
-1, 0, +1
D.
0, 1, 2, 3, ...
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ANSWER :
B. 1, 2, 3, 4, ... (positive integers only)
10.
For an atom in its ground state, an electron in the n=1 orbit is:
A.
Free from nuclear influence
B.
Most strongly bound to the nucleus
C.
Most weakly bound to the nucleus
D.
Has zero energy
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ANSWER :
B. Most strongly bound to the nucleus
11.
The azimuthal quantum number is also known as:
A.
Spin quantum number
B.
Magnetic quantum number
C.
Orbital angular momentum or subsidiary quantum number
D.
Principal quantum number
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ANSWER :
C. Orbital angular momentum or subsidiary quantum number
12.
For a given value of n, the azimuthal quantum number l can have values:
A.
0 to n
B.
0 to n-1
C.
-n to +n
D.
1 to n
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ANSWER :
B. 0 to n-1