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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