<prompt> Artifical radioisotopsa Radiumb Uraniumc Plutoniumd Iridiume Cobaltabbcdebd  <response>: Important artificial radionuclides :- Tritium - 1, Carbon - 14, Cobalt - 60, Strontium 89, Strontium - 90, Iodine 131, Cesium 134, Cesium 137, Plutonium - 239, Iridium, Tc - 99. 