Photoelectron Spectroscopy

AP Chemistry· difficulty 3/5

The peak labeled 2p (with relatively high intensity) likely corresponds to

A
$6 electrons (full p subshell)$
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B
$10 electrons$
C
$1 electron$
D
$2 electrons$

Explanation

A full p subshell contains 6 electrons; this peak's relative height should be ~3\times the 2s peak (which holds 2). The order 1s, 2s, 2p, 3s shows decreasing binding energy across the spectrum.

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