Which of these are correct? – McqOptions

MCQOPTIONS

1.	Which of these are correct?
A.	When a radioactive substance emit alpha particle,its atomic mass and atomic number decrease by 4 and 2 respectively
B.	When a radioactive substance emit beta particle,its atomic mass decrease by 1
C.	In beta decay,a proton changes into electron and neutron
D.	None of the above
Answer» B. When a radioactive substance emit beta particle,its atomic mass decrease by 1

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