Half-life period of Promethium (Pm)

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Half-life period of Promethium (Pm)

Find half-life period of radioactive isotopes of different elements; find its decay type and list of particle emitted. Half-life is the time required for a quantity of radioactive element to reduce to half of its initial value.

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Half-life period of Promethium (Pm)

Mass	Symbol	Decay Type	Half-Life
145	¹⁴⁵Pm	Electron capture (e)	17.73 year
146	¹⁴⁶Pm	Electron capture (e)	5.53 years
147	¹⁴⁷Pm	Beta decay (ß-), Gamma decay	2.6234 years
148	¹⁴⁸Pm		5.37 days
149	¹⁴⁹Pm		53.08 hours
151	¹⁵¹Pm		28.40 hours

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