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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
21 Dec 2021

Given information

We have,

 

We need to find the missing element.

Step-by-step explanation

Step 1.

Find the atomic mass of the desired element using Conserve nucleon number:

Let the desired element's atomic mass be  , then

 

A neutron has been added to the Thorium Element, so the new element has an atomic mass of:

   

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