Which subatomic particle is present in the extra-nuclear part of an atom?
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Neutron
Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen.
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Which subatomic particle is present in the extra-nuclear part of an atom?
Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.
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