1.

Pick out the isobar of 18Ar40.

A. <sub>12</sub>Mg<sup>24</sup>
B. <sub>26</sub>Fe<sup>58</sup>
C. <sub>19</sub>K<sup>40</sup>
D. <sub>28</sub>Ni<sup>64</sup>
Answer» D. <sub>28</sub>Ni<sup>64</sup>


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