Question
Question: In <sub>88</sub>Ra<sup>226</sup> nucleus, there are –...
In 88Ra226 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
138 neutrons and 88 protons
Explanation
Solution
Np = 88
A = 226
Nn = A – Np
= 226 – 88 = 138