Multiple Choice
Which subatomic particles primarily affect the stability of an atom?
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2. Atoms & Elements
The Atom
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The proton has a mass of approximately:
A
1.67 × 10^{-27} kg
B
9.11 × 10^{-31} kg
C
1.00 × 10^{-24} kg
D
4.18 × 10^{-23} kg
Verified step by step guidance1
Understand that the problem asks for the approximate mass of a proton, which is a fundamental particle found in the nucleus of an atom.
Recall that the proton's mass is a well-known constant in chemistry and physics, often expressed in kilograms (kg) or atomic mass units (amu).
Remember that the proton's mass is significantly larger than the electron's mass, which is about \$9.11 \times 10^{-31}$ kg, so you can eliminate options close to the electron's mass.
Recognize that the proton's mass is approximately \$1.67 \times 10^{-27}$ kg, which is a standard accepted value in scientific literature.
Compare the given options to this known value to identify the correct answer.
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