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Photoelectron Spectroscopy in Atomic Structure
Worksheet
Grade Level
Chemistry
11.131 Photoelectron Spectroscopy in Atomic Structure
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Which PES evidence best supports the filling order 3s before 3p for period-3 atoms?
A
Argon has no 3s peak but a 3p peak with area 8.
B
Magnesium shows a 3s peak with area 2 and no 3p peak, while aluminum adds a 3p peak with area 1.
C
Sodium has a 3p peak before any 3s peak appears.
D
Neon has both 3s and 3p peaks with equal areas.
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