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30 Oct 2021

Given information

Here the given isotope of radium is:

 

 

Step-by-step explanation

Step 1.

The atomic number of radium is  .Which means it has  protons.

The atomic mass of isotope of radium is .

The number of neutrons present in isotope of radium is calculated by formula,

 

                                 

                                 

 

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