In \({ }_{88} \mathrm{Ra}^{226}\) nucleus, there are:
A. 138 protons and 88 neutrons
B. 138 neutrons and 88 protons
C. 226 protons and 88 electrons
D. 226 neutrons and 138 electrons
Answer:B
In \({ }_{88} \mathrm{Ra}^{226}\) nucleus, there are:
A. 138 protons and 88 neutrons B. 138 neutrons and 88 protons C. 226 protons and 88 electrons D. 226 neutrons and 138 electrons