Answer:
D.None of the above.
Step-by-step explanation:
We are given that uranium-238 undergoes alpha decay.
Therefore, uranium-238 change into into new element of atomic number 2 less and mass number 4 less and releasing an alpha particle because it undergoes alpha decay
U-238
an atome with atomic number 2 less and mass number 4 less+ helium particle with atomic number 2 and mass number 4
Alpha decay: When an element undergoes an alpha decay then it transform into an atom with atomic number 2 less and mass number 4 less due to emission of alpha particle (alpha particle means helium particle which have atomic number 2 and mass number 4)
Therefore, option A is false.
B. It is also false.Because a new atom is formed and there is no releasing of charged particle
C.There is no any releasing of charged particle and no energy.Hence, it is false.
Answer :D. None ob the above.