When an Element Has Z=31 and 39 Neutrons, What Element ${ }_{70}^{31} \mathrm{Ga}$

question 30

Multiple Choice

When an element has Z=31 and 39 neutrons, what element and isotope is it?

• A) \({ }_{70}^{31} \mathrm{Ga}\)
• B) \({ }_{70}^{31} \mathrm{Yb}\)
• C) \({ }_{31}^{70} \mathrm{Ga}\)
• D) \({ }_{31}^{70} \mathrm{Yb}\)

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