Isotopes of the Element Tungsten
[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 Tungsten with a Known Natural Abundance

Mass Number	Natural Abundance	Half-life

180	0.12%	> 7.4×10⁺¹⁶ years

182	26.50%	> 8.3×10⁺¹⁸ years

183	14.31%	> 1.1×10⁺¹⁷ years

184	30.64%	> 4×10⁺¹⁸ years

186	28.43%	> 6.5×10⁺¹⁸ years

All Known Isotopes of the Element Tungsten

Mass Number	Half-life	Decay Mode	Branching Percentage

158	0.9 milliseconds	Alpha Decay	100.00

159	8.2 milliseconds	Alpha Decay	~ 92.00

		Electron Capture	No Data Available

160	91 milliseconds	Alpha Decay	87.00

161	409 milliseconds	Alpha Decay	73.00

162	1.36 seconds	Electron Capture	54.80

		Alpha Decay	45.20

163	2.8 seconds	Electron Capture	87.00

		Alpha Decay	13.00

164	6.3 seconds	Electron Capture	96.20

		Alpha Decay	3.80

165	5.1 seconds	Electron Capture	100.00

		Alpha Decay	< 0.20

166	19.2 seconds	Electron Capture	99.97

		Alpha Decay	0.04

167	19.9 seconds	Electron Capture	99.96

		Alpha Decay	0.04

168	53 seconds	Electron Capture	~ 100.00

		Alpha Decay	3.2E-3

169	80 seconds	Electron Capture	100.00

170	2.42 minutes	Electron Capture	100.00

171	2.38 minutes	Electron Capture	100.00

172	6.6 minutes	Electron Capture	100.00

173	7.6 minutes	Electron Capture	100.00

174	33.2 minutes	Electron Capture	100.00

175	35.2 minutes	Electron Capture	100.00

176	2.5 hours	Electron Capture	100.00

177	135 minutes	Electron Capture	100.00

178	21.6 days	Electron Capture	100.00

179	37.05 minutes	Electron Capture	100.00

179_m	6.40 minutes	Isomeric Transition	99.72

		Electron Capture	0.28

180	> 7.4×10⁺¹⁶ years	Alpha Decay	No Data Available

181	121.2 days	Electron Capture	100.00

182	> 8.3×10⁺¹⁸ years	Alpha Decay	No Data Available

183	> 1.1×10⁺¹⁷ years	Isomeric Transition	100.00

183_m	5.2 seconds	Isomeric Transition	100.00

184	> 4×10⁺¹⁸ years	Alpha Decay	No Data Available

185	75.1 days	Beta-minus Decay	100.00

185_m	1.67 minutes	Isomeric Transition	100.00

186	> 6.5×10⁺¹⁸ years	Alpha Decay	No Data Available

187	23.72 hours	Beta-minus Decay	100.00

188	69.78 days	Beta-minus Decay	100.00

189	10.8 minutes	Beta-minus Decay	100.00

190	30.0 minutes	Beta-minus Decay	100.00

This page is maintained by Steve Gagnon.

Citation and linking information

Isotopes of the Element Tungsten[Click for Main Data]

Isotopes of the Element Tungsten
[Click for Main Data]