Question Detail

CHM 101 CHM 101 Past Questions Objective Question
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Question

What is the correct order of orbital filling according to the Aufbau principle?
Options
A 1s → 2p → 2s → 3s → 3p
B 1s → 2s → 2p → 3s → 3p → 4s → 3d
Correct Answer
C 1s → 2s → 3s → 2p → 3p
D 1s → 2s → 2p → 3s → 3p → 3d
Correct Answer

Option B is the correct answer.

Detailed Explanation

The correct order of increasing energy (Aufbau principle) is: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, etc.

Hint

Remember the diagonal rule or the n+l rule.

Question Info

Course: CHM 101
Topic: CHM 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 1696 of 1872
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