I-125

Iodine 125 is orbital electron capture decay nuclide and the emission gamma ray energy is 35 billion 480 million ev. The half-life is 60.14 days. 3.7 x 10 Becco iodine 125 weight 5.76 * 10 grams. The exposure rate of 3.7 * 10 Becco iodine 125 point source at 1 cm distant is 0.66 roentgen / time. Iodine 125 belongs to the nuclide nuclide, the key organ is the thyroid gland, the effective half reduction period to the human body is 41.7 days. The chemical properties of iodine 125 are the same as those of elemental iodine.