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1·The radioactive displacement law of Fajans and Soddy was formulated to describe the products of alpha and beta decay.

法扬斯和索迪的放射性位移定律被用来描述α和β衰变的产物。

2·Its two most common isotopes are Technetium-98 and Technetium-99. Technetium-99 is synthetically produced by the beta decay of Molybdenum-99.

它最常见的两种同位素是锝- 98和锝- 99。锝- 99是人工制造的，由钼- 99贝塔衰变得到。

3·These radionuclides undergo radioactive decay, by emitting harmful alpha particles, beta particles or gamma rays.

它们在衰变期间会放出对人体有害的粒子粒子或射线。