The best and most correct answer among the choices provided by your question is all of the above.
All of the choices given are the best ways to explain a nuclear reaction.
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Answer:
krypton is a cation
magnesium is also a cation
aluminium is a anion
and , silicon is cation
68000 = 6.8 * 10000 = 6.8 * 10^4
hope this helps? c;
