Multiple Choice
Which element has an atom with a nucleus containing 56 protons and 82 neutrons?
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2. Atoms & Elements
The Atom
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What is the overall charge of an atom that contains 15 protons, 16 neutrons, and 17 electrons?
A
2-
B
1-
C
1+
D
Neutral
Verified step by step guidance1
Identify the charges of the subatomic particles: protons have a charge of +1, electrons have a charge of -1, and neutrons have no charge (0).
Calculate the total positive charge by multiplying the number of protons by +1: \$15 \times (+1) = +15$.
Calculate the total negative charge by multiplying the number of electrons by -1: \$17 \times (-1) = -17$.
Add the total positive and negative charges to find the overall charge: \(+15 + (-17) = -2\).
Since the overall charge is -2, the atom has a charge of 2-.
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