It's Elemental - Isotopes of the Element Neodymium

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

Mass Number	Natural Abundance	Half-life

142	27.2%	Stable

143	12.2%	Stable

144	23.8%	2.29×10⁺¹⁵ years

145	8.3%	Stable

146	17.2%	Stable

148	5.7%	Stable

150	5.6%	> 6.8×10⁺¹⁸ years

All Known Isotopes of the Element Neodymium

Mass Number	Half-life	Decay Mode	Branching Percentage

126	≈ 1 seconds	Electron Capture	No Data Available

127	1.8 seconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	No Data Available

128	5 seconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	No Data Available

129	7 seconds	Electron Capture	No Data Available

		Electron Capture with delayed Proton Emission	No Data Available

130	13 seconds	Electron Capture	100.00

131	33 seconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	No Data Available

132	80 seconds	Electron Capture	100.00

133	70 seconds	Electron Capture	100.00

133_m	≈ 70 seconds	Electron Capture	100.00

134	8.5 minutes	Electron Capture	100.00

135	12.4 minutes	Electron Capture	100.00

135_m	5.5 minutes	Electron Capture	> 99.97

		Isomeric Transition	< 0.03

136	50.65 minutes	Electron Capture	100.00

137	38.5 minutes	Electron Capture	100.00

137_m	1.60 seconds	Isomeric Transition	100.00

138	5.04 hours	Electron Capture	100.00

139	29.7 minutes	Electron Capture	100.00

139_m	5.50 hours	Electron Capture	88.20

		Isomeric Transition	11.80

140	3.37 days	Electron Capture	100.00

141	2.49 hours	Electron Capture	100.00

141_m	62.0 seconds	Isomeric Transition	100.00

		Electron Capture	< 0.05

142	Stable	-	-

143	Stable	-	-

144	2.29×10⁺¹⁵ years	Alpha Decay	100.00

145	Stable	-	-

146	Stable	-	-

147	10.98 days	Beta-minus Decay	100.00

148	Stable	-	-

149	1.728 hours	Beta-minus Decay	100.00

150	> 6.8×10⁺¹⁸ years	Double Beta-minus Decay	No Data Available

151	12.44 minutes	Beta-minus Decay	100.00

152	11.4 minutes	Beta-minus Decay	100.00

153	31.6 seconds	Beta-minus Decay	100.00

154	25.9 seconds	Beta-minus Decay	100.00

155	8.9 seconds	Beta-minus Decay	100.00

156	5.49 seconds	Beta-minus Decay	100.00

157	> 300 nanoseconds	No Data Available	No Data Available

158	> 300 nanoseconds	No Data Available	No Data Available

159	≈ 0.7 seconds	Beta-minus Decay	No Data Available

160	≈ 0.3 seconds	Beta-minus Decay	No Data Available

161	≈ 0.2 seconds	Beta-minus Decay	No Data Available

Isotopes of the Element Neodymium[Click for Main Data]

Isotopes of the Element Neodymium
[Click for Main Data]