Answer: A, C, E
Explanation: PLATO. all testable questions.
The variable would be the distance you dropped them.
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➷ It means that the electrons have absorbed extra energy
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Nuclei may be unstable if they have
a too much energy.
b too many protons.
C an unstable ratio of protons to neutrons.
d any of the above.
The answer would be, D any of the above.
Hope this helps