Rules for Filling Electrons in Orbitals - Aufbau Principle NEET Questions

Physical Chemistry - Atomic Structure

Rules for Filling Electrons in Orbitals - Aufbau Principle MCQ Questions


13.
The energy of orbitals increases in which order?
A.
2s < 2p < 3s < 3p < 3d
B.
3s < 2s < 3p < 3d
C.
3s < 3p < 3d < 4s
D.
2s < 3s < 2p < 3p < 3d
šŸ˜‘ View Answer Rough Work Error
ANSWER :
A. 2s < 2p < 3s < 3p < 3d
14.
The Aufbau principle is violated when:
A.
An orbital is doubly filled before another is singly filled
B.
Orbitals of the same subshell are filled with the same spin
C.
An electron jumps to a higher orbital before filling the lower one
D.
All of the above
šŸ˜‘ View Answer Rough Work Error
ANSWER :
C. An electron jumps to a higher orbital before filling the lower one
15.
Which orbital is filled first according to the Aufbau principle?
A.
5s
B.
4d
C.
3p
D.
4p
šŸ˜‘ View Answer Rough Work Error
ANSWER :
A. 5s
16.
Which rule is followed by the Aufbau principle?
A.
Hundā€™s rule
B.
Pauliā€™s exclusion principle
C.
(n + l) rule
D.
Law of octaves
šŸ˜‘ View Answer Rough Work Error
ANSWER :
C. (n + l) rule
17.
Which of the following elements follows Aufbauā€™s principle?
A.
Cu
B.
Cr
C.
Fe
D.
Mo
šŸ˜‘ View Answer Rough Work Error
ANSWER :
C. Fe
18.
Which electronic configuration follows Aufbauā€™s principle?
A.
1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 4sĀ² 3dā¶
B.
1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 3dāµ 4sĀ¹
C.
1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 3dĀ³ 4sĀ²
D.
1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 4sĀ¹ 3dā¹
šŸ˜‘ View Answer Rough Work Error
ANSWER :
A. 1sĀ² 2sĀ² 2pā¶ 3sĀ² 3pā¶ 4sĀ² 3dā¶