A) the nucleus of atom
B) the orbit with principal quantum number
C) the inner orbital of the atom
D) the outer most orbit of the atom
Correct Answer: A
Solution :
A radioactive decay is a phenomenon of unstable nucleus of atom.\[\alpha ,\beta \]and\[\gamma \]particles emits from the nucleus.\[\beta \]particles likes electrons emits from the nucleus of atom.You need to login to perform this action.
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