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OpenStudy (anonymous):
After undergoing alpha decay, an atom of radium-226 becomes a. thorium-234 c. uranium-238 b. radon-222 d. radium-224 Can someone give me an walk through
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OpenStudy (isaiah.feynman):
Alpha decay is an emission of a helium nucleus. So, that means an emission of 2 protons and 2 neutrons.
OpenStudy (shamim):
Mass number of radium=226 Right?
OpenStudy (shamim):
Anyway mass number=proton number+neutron number
OpenStudy (shamim):
So 226-4=?
OpenStudy (shamim):
U know mass of an alpha particle is = 2 proton +2 neutrons=4 Right?
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