The Half Life of Tellurium-128 is Unbelievably Long
On the periodic table, tellurium is a silvery metalloid element at position 52. Try not to play with it because it's a little harmful as well. It has eight isotopes, and tellurium-128, one of them, set a Guinness World Record for having the longest half-life ever observed.
Calculated at 2.2 x (10 to the power of 24) years, the number. You can also say it another way, as it is a number that most of us find difficult to pronounce. It has existed for 160 trillion trillion years. Since the cosmos is already about 14 billion years old, tellurium-128 has a half-life that is as close to infinity as you're going to find in nature.
Although it has been asserted that 123Te electron capture has been observed, this has been refuted by the same team's most recent results. 123Te has a half-life that is greater than 9.2 1016 years and perhaps considerably greater. Te can be used as a starting material in particle accelerators like cyclotrons to create radionuclides. Iodine-123 and iodine-124 are two typical radionuclides that can be created from tellurium-124.
