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Which of the following is a true statement about atomic nuclei?
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2. Atoms & Elements
The Atom
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Which part of an atom accounts for most of its volume?
A
The protons
B
The neutrons
C
The electron cloud
D
The nucleus
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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 protons and neutrons are located in the nucleus, which is very small compared to the overall size of the atom.
Recognize that the electron cloud is the region where electrons are likely to be found, and it extends far beyond the nucleus.
Know that the volume of an atom is mostly determined by the space occupied by the electron cloud, not by the nucleus.
Therefore, conclude that the electron cloud accounts for most of the atom's volume.
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