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Which of the following best describes the electric charge of an electron?
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2. Atoms & Elements
The Atom
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Which part of an atom is mostly empty space?
A
The protons
B
The nucleus
C
The electron cloud
D
The neutrons
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Recall the basic structure of an atom: it consists of a nucleus (containing protons and neutrons) and an electron cloud surrounding the nucleus.
Understand that the nucleus is very small and dense, containing almost all the atom's mass, but occupies a tiny fraction of the atom's volume.
Recognize that electrons occupy the electron cloud, which is a large region around the nucleus where electrons are likely to be found.
Note that the space within the electron cloud is mostly empty because electrons are very small and spread out, so the majority of the atom's volume is empty space.
Conclude that the part of the atom that is mostly empty space is the electron cloud, not the nucleus, protons, or neutrons.
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