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Wiktionary
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potassium-39
English
Noun
potassium
-39
(
uncountable
)
(
physics
)
The major
stable
isotope
of
potassium
,
39
19
K
, having nineteen
protons
and twenty
neutrons
; it amounts to over 93% of the
element
in
nature
Related terms
potassium-40
potassium-42
potassium-43
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