Multiple Choice
When a lithium atom is made from a helium atom by adding a proton (and neutron) to the nucleus and an electron outside, the electron goes into an n = 2,
state rather than an n = 1,
state. This is an indication that electrons:
A) obey the Pauli exclusion principle
B) obey the minimum energy principle
C) undergo the Zeeman effect
D) are diffracted
E) and protons are interchangeable
Correct Answer:

Verified
Correct Answer:
Verified
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