During nuclear decay, a new isotope is created. How is the nucleus of the new isotope different from the parent if the parent isotope has undergone alpha decay?
A)
The atomic number decreases by 2 and the mass decreases by 4.
B)
The atomic number decreases by 2 and the mass increases by 1.
)
The atomic number increases by 2 and the mass remains the same.
D)
The atomic number remains the same and the mass decreases by 1.