Berapàkah jumlah proton elektron dàn neutron

B). proton = 8
neutron = 16 – 8 = 8
elektron = jumlah proton + muatan negatif = 8 + 2 = 10

c). proton = 13
neutron = 27 – 13 = 14
elektron = jumlah proton – muatan positif = 13 – 3 = 10