Research at Laboratori Nazionali del Gran Sasso showed that europium-151 experimentally decays to promethium-147 with the half-life of 5 years.
42.
Lighter unstable isotopes of samarium primarily decay by electron capture to isotopes of promethium, while heavier ones convert through beta decay to isotopes of europium.
43.
Note : element 43 ( Tc ) Technetium and element 61 ( Pm ) Promethium are missing from the graph due to their extremely low abundance.
44.
Lighter unstable isotopes of samarium primarily decay by electron capture to isotopes of promethium, while heavier ones decay by beta decay to isotopes of europium.
45.
The isotopes of promethium range in atomic weight from 125.95752 u ( 126 Pm ) to 162.95368 u ( 163 Pm ).
46.
Elements with atomic numbers 1 through 40 are all stable, while those with atomic numbers 41 through 82 ( except technetium and promethium ) are metastable.
47.
In atomic batteries, the beta particles emitted by promethium-147 are converted into electric current by sandwiching a small promethium source between two semiconductor plates.
48.
In atomic batteries, the beta particles emitted by promethium-147 are converted into electric current by sandwiching a small promethium source between two semiconductor plates.
49.
Note that there are two breaks where the unstable elements technetium ( atomic number : 43 ) and promethium ( atomic number : 61 ) would be.
50.
:: : : The promethium article notes that there is probably about 570 g that exist in the earth's crust at any one time.
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