Question Detail

CHM 102 Electronic Theory in Organic Chemistry Objective Question
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Question

What is Hund's rule?
Options
A Electrons fill orbitals in order of increasing energy
B No two electrons can have the same spin in an atom
C Every orbital in a subshell is singly occupied before any orbital is doubly occupied, and all singly occupied electrons have the same spin
Correct Answer
D Electrons always pair up before occupying empty orbitals
Correct Answer

Option C is the correct answer.

Detailed Explanation

Hund's rule maximizes total spin by placing electrons singly in degenerate orbitals with parallel spins before pairing them, minimizing electron-electron repulsion.

Hint

Maximize spin, minimize repulsion.

Question Info

Course: CHM 102
Topic: Electronic Theory in Organic Chemistry
Type: Objective
Difficulty: Not specified
Question 676 of 1999
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