Examlex
Compare and contrast direct observation and contrived observation.
Isotope
Forms of a specific chemical element distinguished by having identical proton counts yet varying quantities of neutrons within their cores.
Neutrons
Subatomic particles found in the nucleus of an atom with no electric charge.
Protons
Subatomic particles found in the nucleus of an atom, carrying a positive electrical charge.
Isotope
Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number, but have the same number of protons in their atomic nuclei.
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