Multiple Choice
In an atom, which subatomic particles are in constant motion around the nucleus in the simplified model of atomic structure?
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4. Atoms and Elements
Subatomic Particles (Simplified)
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Which statement best describes an electron?
A
A positively charged subatomic particle located in the nucleus
B
A neutral subatomic particle located in the nucleus
C
A negatively charged subatomic particle found in the electron cloud outside the nucleus
D
A negatively charged particle that accounts for nearly all of an atom’s mass
Verified step by step guidance1
Recall the basic structure of an atom, which consists of a nucleus containing protons and neutrons, and electrons located outside the nucleus in the electron cloud.
Understand the charge of each subatomic particle: protons are positively charged, neutrons are neutral (no charge), and electrons are negatively charged.
Identify the location of each particle: protons and neutrons are in the nucleus, while electrons are found in the electron cloud surrounding the nucleus.
Consider the mass of each particle: protons and neutrons have significant mass, whereas electrons have very little mass compared to them.
Based on these points, determine that an electron is a negatively charged subatomic particle found in the electron cloud outside the nucleus, and it does not account for nearly all of an atom’s mass.
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