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Which subatomic particle carries a negative charge?
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2. Atoms & Elements
Subatomic Particles
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Which of the following subatomic particles has the least mass?
A
Alpha particle
B
Proton
C
Electron
D
Neutron
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Identify the subatomic particles mentioned: alpha particle, proton, electron, and neutron.
Recall that an alpha particle consists of 2 protons and 2 neutrons, so its mass is roughly 4 times that of a proton or neutron.
Understand that protons and neutrons have similar masses, both significantly greater than that of an electron.
Recognize that the electron is a fundamental particle with a mass approximately 1/1836 that of a proton or neutron.
Conclude that among the given options, the electron has the least mass.
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