bantuin plizz

<p>A = nomor massa</p><p>Z = nomor atom&nbsp;</p><p>* Rumus :&nbsp;</p><p>Z = proton = elektron&nbsp;</p><p>Neuton = A - Z</p><p>* Jawab :</p><p>a. ) A= 32 &nbsp; &nbsp; Z= 14</p><p>Z = 14, maka proton dan elektron = 14</p><p>Neutron = 32-14 = 18</p><p>&nbsp;</p><p>b.) A= 59 &nbsp; &nbsp;Z= 28</p><p>Z= 28, proton dan elektron = 28</p><p>Neutron = 59 - 28 = 31</p><p>&nbsp;</p><p>&nbsp;c.) A= 127 &nbsp; &nbsp; &nbsp;Z= 52</p><p>Z= 52, proton dan elektron= 52</p><p>Neutron = 127-52 = 75</p><p>&nbsp;</p><p>d.) A= 238 &nbsp; &nbsp; &nbsp; Z= 92</p><p>Z= 92, &nbsp;p dan e = 92</p><p>N = 238 - 92 = 146</p><p>&nbsp;</p><p>e.) A= 207 &nbsp; &nbsp; Z= 82</p><p>Z= 82, p dan e = 82</p><p>N= 207 - 82 = 125</p><p>&nbsp;</p><p>f.) A= 15 &nbsp; &nbsp; &nbsp; &nbsp;Z= 7</p><p>Z= 7 , p dan e = 7</p><p>N = 15 - 7 = 8</p>