Solved

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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