Pauli's Exclusion Principle and Hund's Rule NEET Questions

Physical Chemistry - Atomic Structure

Pauli's Exclusion Principle and Hund's Rule MCQ Questions


1.
Pauli's exclusion principle states that:
A.
No two electrons can have the same set of quantum numbers
B.
Only one electron can occupy an orbital
C.
Maximum two electrons can exist in an orbital
D.
No electron can have a negative spin
šŸ˜‘ View Answer Rough Work Error
ANSWER :
A. No two electrons can have the same set of quantum numbers
2.
Hund's rule states that:
A.
Electrons pair only after all orbitals in a subshell are singly occupied
B.
Each electron must have opposite spin
C.
Lower energy orbitals fill first
D.
An orbital can have more than two electrons
šŸ˜‘ View Answer Rough Work Error
ANSWER :
A. Electrons pair only after all orbitals in a subshell are singly occupied
3.
Which of the following correctly explains Hundā€™s rule?
A.
Maximum multiplicity
B.
Minimum energy rule
C.
Quantum number conservation
D.
None of these
šŸ˜‘ View Answer Rough Work Error
ANSWER :
A. Maximum multiplicity
4.
Which element follows Hundā€™s rule correctly?
A.
C
B.
Fe
C.
Ca
D.
Zn
šŸ˜‘ View Answer Rough Work Error
ANSWER :
B. Fe
5.
According to Pauli's exclusion principle, how many electrons can occupy an orbital?
A.
1
B.
2
C.
3
D.
4
šŸ˜‘ View Answer Rough Work Error
ANSWER :
B. 2
6.
Which of the following is an incorrect electron configuration?
A.
1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 4sĀ²
B.
1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 3dā¶ 4sĀ²
C.
1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 3dāµ 4sĀ²
D.
1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 4sĀ¹ 3dā¹
šŸ˜‘ View Answer Rough Work Error
ANSWER :
D. 1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 4sĀ¹ 3dā¹