Photoelectron Spectroscopy

AP Chemistry· difficulty 3/5

A photoelectron spectrum is recorded for a gaseous, neutral element. Three peaks are observed at binding energies of 11.5, 1.36, and 0.80 MJ/mol, with relative intensities of 2:2:2.

The element is most likely:

A
$Nitrogen$
B
$Boron$
C
$Carbon$
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D
$Oxygen$

Explanation

Three peaks at 11.5, 1.36, 0.80 with 2:2:2 intensities match 1s^2 2s^2 2p^2, the configuration of carbon.

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