Multiple Choice
Which of the following represents the composition of the ion typically formed by magnesium?
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2. Atoms & Elements
Ions
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Which process must an atom undergo to become a negative ion?
A
Gain one or more protons
B
Gain one or more electrons
C
Lose one or more neutrons
D
Lose one or more electrons
Verified step by step guidance1
Understand that an ion is an atom or molecule that has gained or lost electrons, resulting in a net electrical charge.
Recall that protons are positively charged particles in the nucleus and do not change during ion formation; changing protons would change the element itself.
Recognize that neutrons are neutral particles in the nucleus and their loss or gain does not create an ion but rather isotopes.
Know that electrons are negatively charged particles surrounding the nucleus, and gaining electrons increases the negative charge of the atom.
Conclude that to become a negative ion (anion), an atom must gain one or more electrons, increasing its negative charge.
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