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15 questions
An isotope of an element has the same number of _________, but a different number of _________.
Protons, electrons
Protons, neutrons
Electrons, neutrons
Neutrons, protons
A radioactive nuclide has a ____ stable nucleus than a non-radioactive nucleus of the same element.
more
less
identical
small
Which type of radiation releases an electron?
Alpha radiation
Beta radiation
Gamma radiation
Theta radiation
What particle is released when an unstable isotope undergoes alpha radiation?
a helium nucleus
an electron
a photon of light
a neutron
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