It's Elemental - Isotopes of the Element Lead

Isotopes of the Element Lead
[Click for Main Data]

Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.

Isotopes of the Element Lead with a Known Natural Abundance

Mass Number	Natural Abundance	Half-life

204	1.4%	≥ 1.4×10⁺¹⁷ years

206	24.1%	Stable

207	22.1%	Stable

208	52.4%	Stable

All Known Isotopes of the Element Lead

Mass Number	Half-life	Decay Mode	Branching Percentage

180	4 milliseconds	Alpha Decay	100.00

181	45 milliseconds	Alpha Decay	< 100.00

		Electron Capture	~ 2.00

182	55 milliseconds	Alpha Decay	<= 100.00

183	300 milliseconds	Alpha Decay	~ 94.00

		Electron Capture	~ 6.00

184	0.55 seconds	Alpha Decay	> 0.00

		Electron Capture	No Data Available

185	4.1 seconds	Alpha Decay	<= 100.00

186	4.82 seconds	Alpha Decay	38.00

		Electron Capture	No Data Available

187	15.2 seconds	Electron Capture	93.00

		Alpha Decay	7.00

187_m	18.3 seconds	Electron Capture	88.00

		Alpha Decay	12.00

188	24.2 seconds	Electron Capture	90.70

		Alpha Decay	9.30

189	51 seconds	Electron Capture	> 99.00

		Alpha Decay	~ 0.40

190	1.2 minutes	Electron Capture	99.10

		Alpha Decay	0.90

191	1.33 minutes	Electron Capture	99.99

		Alpha Decay	0.01

191_m	2.18 minutes	Electron Capture	100.00

		Alpha Decay	~ 0.02

192	3.5 minutes	Electron Capture	99.99

		Alpha Decay	5.9E-3

193	No Data Available	Electron Capture	No Data Available

193_m	5.8 minutes	Electron Capture	100.00

194	12.0 minutes	Electron Capture	100.00

		Alpha Decay	7.3E-6

195	≈ 15 minutes	Electron Capture	100.00

195_m	15.0 minutes	Electron Capture	100.00

196	37 minutes	Electron Capture	~ 100.00

		Alpha Decay	<= 3.0E-5

197	8 minutes	Electron Capture	100.00

197_m	43 minutes	Electron Capture	81.00

		Isomeric Transition	19.00

198	2.4 hours	Electron Capture	100.00

199	90 minutes	Electron Capture	100.00

199_m	12.2 minutes	Isomeric Transition	< 100.00

		Electron Capture	> 0.00

200	21.5 hours	Electron Capture	100.00

201	9.33 hours	Electron Capture	100.00

201_m	61 seconds	Isomeric Transition	> 99.00

		Electron Capture	< 1.00

202	52.5×10⁺³ years	Electron Capture	100.00

		Alpha Decay	< 1.00

202_m	3.53 hours	Isomeric Transition	90.50

		Electron Capture	9.50

203	51.873 hours	Electron Capture	100.00

203_m	6.3 seconds	Isomeric Transition	100.00

203_m2	0.48 seconds	Isomeric Transition	100.00

204	≥ 1.4×10⁺¹⁷ years	Alpha Decay	No Data Available

204_m	67.2 minutes	Isomeric Transition	100.00

205	1.53×10⁺⁷ years	Electron Capture	100.00

206	Stable	-	-

207	Stable	-	-

207_m	0.806 seconds	Isomeric Transition	100.00

208	Stable	-	-

209	3.253 hours	Beta-minus Decay	100.00

210	22.3 years	Beta-minus Decay	100.00

		Alpha Decay	1.9E-6

211	36.1 minutes	Beta-minus Decay	100.00

212	10.64 hours	Beta-minus Decay	100.00

213	10.2 minutes	Beta-minus Decay	100.00

214	26.8 minutes	Beta-minus Decay	100.00

Isotopes of the Element Lead[Click for Main Data]

Isotopes of the Element Lead
[Click for Main Data]