None of the above isotopes are radioactive except for nickel’s pair and 132Sn, which, in spite of its double magic number of 50 protons and 82 neutrons, has a half life of less than a day. So a while ago, I contacted a scientist to ask him why 132Sn is radioactive.
Here is the answer from Alex Brown of the National Superconducting Cyclotron Laboratory http://www.nscl.msu.edu
Sn-132 is doubly-magic, but being doubly-magic does not guarantee stability. There are other features that can make a nucleus unstable. In this case Sn-132 is too far from the “valley of stability” – it has too many neutrons. The neutrons in Sn-132 beta decay and turn into protons eventually leading to the most stable mass 132 nucleus Xe-132.
The “magic number” of 50 protons for Sn does show up by the fact that Sn has more stable isotopes than any other element – they are: Sn-112, Sn-114, Sn-115, Sn-116, Sn-117, Sn-118, Sn-119, Sn-120, Sn-122 and Sn-124. There are other nuclei that we predict to be doubly-magic that are unstable, such as Sn-100 and Ni-78.
At our National Superconducting Cyclotron Laboratory are are trying to produce these nuclei and study their properties.