MCQOPTIONS
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| 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> | |