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is a neutral atom of thorium. How many protons, neutrons and electrons does it contain? 
is a neutral atom of a different isotope of thorium which contains Z electrons. Give possible values for X, Y and Z. 
Cyberphysics - a web-based teaching aid - for students of physics, their teachers and parents....
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|
Q2.
(2 marks)
(3 marks)
|
Follow me...
|
Cyberphysics - a web-based teaching aid - for students of physics, their teachers and parents....
