Isotopes of lithium
List of isotopes
Bold for stable isotopes One of the few stable odd-odd nuclei Produced in Big Bang nucleosynthesis and by cosmic ray spallation Immediately decays into two ⁴He atoms for a net reaction of ⁸Li → 2⁴He + e− Immediately decays into two ⁴He atoms for a net reaction of ⁹Li → 2⁴He + ¹n + e− Has 2 halo neutrons Immediately decays into two ⁴He atoms for a net reaction of ¹¹Li → 2⁴He + 3¹n + e−

Isotopes of lithium

Section Title: List of isotopes
Table Section Text: Bold for stable isotopes One of the few stable odd-odd nuclei Produced in Big Bang nucleosynthesis and by cosmic ray spallation Immediately decays into two ⁴He atoms for a net reaction of ⁸Li → 2⁴He + e− Immediately decays into two ⁴He atoms for a net reaction of ⁹Li → 2⁴He + ¹n + e− Has 2 halo neutrons Immediately decays into two ⁴He atoms for a net reaction of ¹¹Li → 2⁴He + 3¹n + e−

nuclide symbol	Z( p )	N( n )	isotopic mass (u)	half-life [resonance width]	decay mode(s)	daughter isotope(s)	nuclear spin and parity	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)

excitation energy

4 Li	3	1	4.02719(23)	91(9)×10−24 s [6.03 MeV]	p	3 He	2-

5 Li	3	2	5.01254(5)	370(30)×10−24 s [~1.5 MeV]	p	4 He	3/2−

6 Li	3	3	6.0151228874(15)	Stable	1+	[0.0759(4)]	0.07225–0.07714

6m Li	3562.88(10) keV	5.6(14)×10−17 s	IT	6 Li	0+

7 Li	3	4	7.016003437(5)	Stable	3/2−	[0.9241(4)]	0.92275–0.92786

8 Li	3	5	8.02248625(5)	839.40(36) ms	β−	8 Be	2+

9 Li	3	6	9.02679019(20)	178.3(4) ms	β−, n (50.8%)	8 Be	3/2−

β− (49.2%)	9 Be

10 Li	3	7	10.035483(14)	2.0(5)×10−21 s [1.2(3) MeV]	n	9 Li	(1−,2−)

10m1 Li	200(40) keV	3.7(15)×10−21 s	1+

10m2 Li	480(40) keV	1.35(24)×10−21 s	2+

11 Li	3	8	11.0437236(7)	8.75(14) ms	β−, n (86.3%)	10 Be	3/2−

β− (5.978%)	11 Be

β−, 2n (4.1%)	9 Be

β−, 3n (1.9%)	8 Be

β−, α (1.7%)	7 He, 4 He

β−, fission (.009%)	8 Li, 3 H

β−, fission (.013%)	9 Li, 2 H

12 Li	3	9	12.05261(3)	<10 ns	n	11 Li

13 Li	3	10	13.06117(8)	3.3(12)×10−21 s	2n	11 Li	3/2-#

Sentence(s)

Lithium-9 has a half-life of 178.3 milliseconds, and lithium-11 has a half-life of about 8.75 milliseconds.

final_sentence: Lithium-9 has a half-life of 178.3 milliseconds, and lithium-11 has a half-life of about 8.75 milliseconds.