Multiple Choice
In noble-gas notation, what is the electron configuration of the magnesium ion (formed by losing two electrons)?
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4. Atoms and Elements
Ions (Simplified)
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How is a neutral atom different from an ion?
A
A neutral atom has no neutrons, while an ion has neutrons in its nucleus.
B
A neutral atom has equal numbers of protons and electrons, while an ion has a net charge because it has gained or lost electrons.
C
A neutral atom always has more protons than electrons, while an ion always has more electrons than protons.
D
A neutral atom is always a metal, while an ion is always a nonmetal.
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