Un catión divalente presenta 25 electrones y 33 neutrones. Calcular el número de masa

<div class="athena_tag_tk_ques_text_content" data-testid="answer_box_text"><p><strong>Catión divalente: carga positiva +2</strong></p><p><strong></strong></p><p><strong>#e = Z - q</strong></p><p><strong></strong></p><p><strong>36 = Z -(+2)</strong></p><p><strong></strong></p><p><strong>36 = Z -2</strong></p><p><strong></strong></p><p><strong>Z = 38</strong></p><p><strong></strong></p><p><strong>A = número de masa</strong></p><p><strong></strong></p><p><strong>A = Z + N</strong></p><p><strong></strong></p><p><strong>A = 38 + 38</strong></p><p><strong></strong></p><p><strong>A = 76</strong></p><p></p></div>