镧的同位素

镧（原子量：138.90547(7)）的同位素，其中有1个同位素是稳定的。

## 图表

p（~60%）

115Ba

β+（~40%）

116Ba

β+

117Ba

p

116Ba

10(5) ms

(9/2+)

118La

117.94673(32)#

200# ms

β+

118Ba

119La

118.94099(43)#

1# s

β+

119Ba

11/2−#

β+

120Ba

β+, p

119Cs

β+

121Ba

β+, p

120Cs

β+

122Ba

β+, p

121Cs

123La

122.92624(21)#

17(3) s

β+

123Ba

11/2−#

124La

123.92457(6)

29.21(17) s

β+

124Ba

(7−,8−)

21(4) s

low(+#)

125La

124.920816(28)

64.8(12) s

β+

125Ba

(11/2−)

390(40) ms

(3/2+)

126La

125.91951(10)

54(2) s

β+

126Ba

(5)(+#)

20(20) s

(0−,1−,2−)

127La

126.916375(28)

5.1(1) min

β+

127Ba

(11/2−)

β+

127Ba

IT

127La

128La

127.91559(6)

5.18(14) min

β+

128Ba

(5+)

<1.4 min

IT

128La

(1+,2−)

129La

128.912693(22)

11.6(2) min

β+

129Ba

3/2+

560(50) ms

IT

129La

11/2−

130La

129.912369(28)

8.7(1) min

β+

130Ba

3(+)

131La

130.91007(3)

59(2) min

β+

131Ba

3/2+

170(10) µs

11/2−

132La

131.91010(4)

4.8(2) h

β+

132Ba

2−

IT (76%)

132La

β+ (24%)

132Ba

133La

132.90822(3)

3.912(8) h

β+

133Ba

5/2+

134La

133.908514(21)

6.45(16) min

β+

134Ba

1+

135La

134.906977(11)

19.5(2) h

β+

135Ba

5/2+

136La

135.90764(6)

9.87(3) min

β+

136Ba

1+

114(3) ms

IT

136La

(8)(−#)

137La

136.906494(14)

6(2)×104 a

EC

137Ba

7/2+

β+ (66.4%)

138Ba

β- (33.6%)

138Ce

116(5) ns

(3)+

139La

138.9063533(26)

Stable

7/2+

0.99910(1)

140La

139.9094776(26)

1.6781(3) d

β-

140Ce

3−

141La

140.910962(5)

3.92(3) h

β-

141Ce

(7/2+)

142La

141.914079(6)

91.1(5) min

β-

142Ce

2−

143La

142.916063(17)

14.2(1) min

β-

143Ce

(7/2)+

144La

143.91960(5)

40.8(4) s

β-

144Ce

(3−)

145La

144.92165(10)

24.8(20) s

β-

145Ce

(5/2+)

β- (99.99%)

146Ce

β-, n (.007%)

145Ce

10.0(1) s

β-

146Ce

(6−)

β- (99.96%)

147Ce

β-, n (.04%)

146Ce

β- (99.85%)

148Ce

β-, n (.15%)

147Ce

β- (98.6%)

149Ce

β-, n (1.4%)

148Ce

β- (97.3%)

150Ce

β-, n (2.7%)

149Ce

151La

150.94172(43)#

300# ms >300 ns

β-

151Ce

5/2+#

152La

151.94625(43)#

200# ms >300 ns

β-

152Ce

153La

152.94962(64)#

150# ms >300 ns

β-

153Ce

5/2+#

154La

153.95450(64)#

100# ms

β-

154Ce

155La

154.95835(86)#

60# ms

β-

155Ce

5/2+#

## 参考文献

- Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
- Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report) . Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) .
- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties , Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.

## 基本资料

- infobox_name：lanthanum
- 货币符号：La
- 日语原文：镧
- standard atomic weight：138.90547(7)