A radioactive atom `X` emits a `beta-`particle to produce an atom `Y` which then emits an Particle to give an atom `Z` (1) the atomic number of `X` is less than that of `Z`. (2) the atomic number of `Y` is less than that of `Z`. (3) the mass number of `X` is the same as that of `Y`.A. 1,2 and 3 are correctB. 1 and 2 are correctC. 2 and 3 are correctD. 3 is correct

A radioactive atom `X` emits a `beta-`particle to produce an atom `Y`

1.	A radioactive atom `X` emits a `beta-`particle to produce an atom `Y` which then emits an Particle to give an atom `Z` (1) the atomic number of `X` is less than that of `Z`. (2) the atomic number of `Y` is less than that of `Z`. (3) the mass number of `X` is the same as that of `Y`.A. 1,2 and 3 are correctB. 1 and 2 are correctC. 2 and 3 are correctD. 3 is correct
Answer» Correct Answer - d

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