Isotopes

Categories

AlphaBeta minusProton emissionPositron emissionNeutron emissionElectron captureSpontaneous fissionStable

1gHhydrogen 2gHehelium 3sLilithium 4sBeberyllium 5sBboron 6sCcarbon 7gNnitrogen 8gOoxygen 9gFfluorine 10gNeneon 11sNasodium 12sMgmagnesium 13sAlaluminium 14sSisilicon 15sPphosphorus 16sSsulfur 17gClchlorine 18gArargon 19sKpotassium 20sCacalcium 21sScscandium 22sTititanium 23sVvanadium 24sCrchromium 25sMnmanganese 26sFeiron 27sCocobalt 28sNinickel 29sCucopper 30sZnzinc 31sGagallium 32sGegermanium 33sAsarsenic 34sSeselenium 35lBrbromine 36gKrkrypton 37sRbrubidium 38sSrstrontium 39sYyttrium 40sZrzirconium 41sNbniobium 42sMomolybdenum 43sTctechnetium 44sRuruthenium 45sRhrhodium 46sPdpalladium 47sAgsilver 48sCdcadmium 49sInindium 50sSntin 51sSbantimony 52sTetellurium 53sIiodine 54gXexenon 55sCscaesium 56sBabarium 57sLalanthanum 58sCecerium 59sPrpraseodymium 60sNdneodymium 61sPmpromethium 62sSmsamarium 63sEueuropium 64sGdgadolinium 65sTbterbium 66sDydysprosium 67sHoholmium 68sErerbium 69sTmthulium 70sYbytterbium 71sLulutetium 72sHfhafnium 73sTatantalum 74sWtungsten 75sRerhenium 76sOsosmium 77sIriridium 78sPtplatinum 79sAugold 80lHgmercury 81sTlthallium 82sPblead 83sBibismuth 84sPopolonium 85sAtastatine 86gRnradon 87sFrfrancium 88sRaradium 89sAcactinium 90sThthorium 91sPaprotactinium 92sUuranium 93sNpneptunium 94sPuplutonium 95nAmamericium 96nCmcurium 97nBkberkelium 98nCfcalifornium 99nEseinsteinium 100nFmfermium 101nMdmendelevium 102nNonobelium 103nLrlawrencium 104nRfrutherfordium 105nDbdubnium 106nSgseaborgium 107nBhbohrium 108nHshassium 109nMtmeitnerium 110nDsdarmstadtium 111nRgroentgenium 112nCncopernicium 113nNhnihonium 114nFlflerovium 115nMcmoscovium 116nLvlivermorium 117nTstennessine 118nOgoganesson

State at 25 °Cs = solidl = liquidg = gasn = not naturally occurring

potassium

3 natural29 known

Isotope	Mass	Abundance	Half-life	Spin
K-31	31.036780	—	> 10 ps	3/2+#
K-32	32.023607	—	—	1+#
K-33	33.008095	—	—	3/2+#
K-34	33.998690	—	—	1+#
	34.988005	—	175 ms	3/2+
	35.981302	—	341 ms	2+*
	36.973376	—	1.24 s	3/2+*
	37.969081	—	7.65 min	3+* T=0
K-39	38.963706	93.26%	stable	3/2+*
	39.963998	0.012%	1.25 Gy	4-*
K-41	40.961825	6.730%	stable	3/2+*
	41.962402	—	12.4 h	2-*
	42.960735	—	22.3 h	3/2+*
	43.961587	—	22.1 min	2-*
	44.960691	—	17.8 min	3/2+*
	45.961982	—	1.6 min	2-*
	46.961662	—	17.4 s	1/2+*
	47.965341	—	6.83 s	1-*
	48.968211	—	1.26 s	1/2+*
	49.972380	—	472 ms	0-*
	50.975829	—	365 ms	3/2+*
	51.981602	—	110 ms	2-#
	52.986800	—	30 ms	3/2+
	53.994471	—	10 ms	2-#
K-55	55.000505	—	10 ms	3/2+#
K-56	56.008567	—	5 ms	2-#
K-57	57.015169	—	2 ms	3/2+#
K-58	58.023543	—	2 ms	2-#
K-59	59.030864	—	1 ms	3/2+#