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Where are the protons located in an atom?
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2. Atoms & Elements
The Atom
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Where is most of the mass of an atom located?
A
In the nucleus
B
In the electron cloud
C
In the outermost shell
D
Evenly distributed throughout the atom
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Recall the basic structure of an atom, which consists of a nucleus at the center and electrons surrounding it in the electron cloud.
Understand that the nucleus contains protons and neutrons, both of which have significant mass compared to electrons.
Recognize that electrons have very little mass and occupy the space around the nucleus, known as the electron cloud.
Since protons and neutrons are much heavier than electrons, the majority of an atom's mass is concentrated in the nucleus.
Therefore, the correct conclusion is that most of the mass of an atom is located in the nucleus.
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