Which of the following electron configurations best describes the 2p sub-orbitals of fluorine?
A) ↑↓ ↑↓ ↑↓ (the 2p electrons)
B) ↑↓ ↑    ↑↓ (the 2p electrons)
C) ↑↓ ↑↓ ↑    (the 2p electrons)
D) ↑    ↑    ↑    (the 2p electrons)

Question

Which of the following electron configurations best describes the 2p sub-orbitals of fluorine?
A) ↑↓ ↑↓ ↑↓ (the 2p electrons)
B) ↑↓ ↑    ↑↓ (the 2p electrons)
C) ↑↓ ↑↓ ↑    (the 2p electrons)
D) ↑    ↑    ↑    (the 2p electrons)

Quizplus · Accepted Answer

Fluorine has 7 electrons in its 2p sub-orbitals. According to Hund's rule, electrons will fill each orbital singly before pairing up. The configuration for fluorine's 2p electrons is thus ↑↓ ↑↓ ↑, with the last orbital having only one electron.

Which of the Following Electron Configurations Best Describes the 2p