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How many electrons does a neutral atom of lithium (Li) contain?
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2. Atoms & Elements
The Atom
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Which statement correctly describes the difference in electric charge between protons and electrons in an atom?
A
Protons have a negative charge, while electrons have a positive charge.
B
Protons and electrons both have a positive charge.
C
Protons have no charge, while electrons have a positive charge.
D
Protons have a positive charge, while electrons have a negative charge.
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Recall that protons and electrons are subatomic particles found in atoms, each with a specific electric charge.
Understand that the electric charge of a proton is positive, which means it carries a charge of +1 elementary charge.
Recognize that the electric charge of an electron is negative, carrying a charge of -1 elementary charge, equal in magnitude but opposite in sign to that of a proton.
Note that neutrons, another subatomic particle, have no electric charge and are neutral, but they are not part of this question.
Therefore, the correct description is that protons have a positive charge, while electrons have a negative charge.
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