[VISUAL] The photoelectron spectra for H and He are represented above. Which of the following statem — Atomic Structure Chemistry Question
Question
[VISUAL]
The photoelectron spectra for H and He are represented above. Which of the following statements best accounts for the fact that the peak for He is to the left of the peak for H and is twice as high?
A.
H has a greater nuclear charge, attracting its single electron more strongly than the electrons in He are attracted.
B.✓ Correct
He has a greater nuclear charge than H, which increases the attraction of its electrons to the nucleus, and He has twice as many electrons in its 1s orbital.
C.
He has more electron-electron repulsion, which decreases the binding energy of its electrons compared to H.
D.
H has twice as many electrons in its valence shell, which increases its peak height relative to He.
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