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Which subatomic particle has a negative charge?
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2. Atoms & Elements
Subatomic Particles
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What is the smallest subatomic particle in terms of mass?
A
Proton
B
Neutron
C
Alpha particle
D
Electron
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Identify the subatomic particles listed: proton, neutron, alpha particle, and electron.
Understand that subatomic particles are the building blocks of atoms, with protons and neutrons located in the nucleus and electrons orbiting around the nucleus.
Recall the relative masses of these particles: protons and neutrons have similar masses, which are significantly larger than that of an electron. An alpha particle, which consists of 2 protons and 2 neutrons, is even heavier.
Recognize that the electron is much lighter than the other particles mentioned. Its mass is approximately 1/1836 that of a proton.
Conclude that the electron is the smallest subatomic particle in terms of mass among the options provided.
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