Effects of Ionizing a Radioactive Isotope If you took your favorite radioactive isotope and ionized it using a strong electric field (or any other ionization method), thereby stripping it of an electron, what would happen when it decayed? For simplicity, assume this process takes place in a vacuum. 

Would the resulting material also be ionized? (Main Question)

If the isotope decayed via beta decay, is there any chance the produced electron could take the place of the stripped electron?
There is no effect. Imagine you are demolishing a building with high explosives; does it matter whether the small window on the third floor was open or closed prior to the explosion? No, it doesn't. The building will go crashing down all the same.

I believe this is a correct metaphor of the relation between chemistry and radioactivity. Of course the product will be ionized. Quite probably, it will be multiply ionized via Auger events, and also will certainly ionize quite a few other atoms around. Whether it was ionized before is about as unimportant as that small window on the third floor.