Which of the following representations is correct for an ...
Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons?
\(^{30}_{28} X\)
\(^{28}_{30} X\)
\(^{58}_{30} X\)
\(^{58}_{28} X\)
Correct answer is D
\(X^{A = p + n = 28 + 30 = 58}_{Z = P = E = 28}\)
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