<prompt> Half life of Technetium is6 hours12 hours24 hours26 hours  <response>: A i.e. 6 hours Half life tin of radium Ra226is 1602-1626 years longestQ; Cesium 137Cs is 30 yearsQ; Cobalt 60Co is 5.2 yearsQ; iridium 1921ris 74.5 daysQ; Iodine P31is 8 daysQ; 1123 is 13 hoursQ; technitium Tc99 is 6 hoursQ; and 1132 is 2.3 hoursQ. 