Half-life period of Samarium (Sm)

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Half-life period of Samarium (Sm)

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 Samarium (Sm)

Mass	Symbol	Decay Type	Half-Life
139m	^139mSm		10.7 seconds
141m	^141mSm		22.6 minutes
143m	^143mSm		66 seconds
145	¹⁴⁵Sm		340 days
146	¹⁴⁶Sm	Alpha decay (a)	103.5 million years
147	¹⁴⁷Sm	Alpha decay (a)	106 billion years
148	¹⁴⁸Sm	Alpha decay (a)	7 x 10¹⁵ years
151	¹⁵¹Sm		90 years
153	¹⁵³Sm		46.7 hours

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