Table
| nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s) |
daughter isotope(s) |
nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
|---|---|---|---|---|---|---|---|---|---|
| excitation energy | |||||||||
| 30Ar | 18 | 12 | 30.02156(32)# | <20 ns | p | 29Cl | 0+ | ||
| 31Ar | 18 | 13 | 31.01212(22)# | 14.4(6) ms | β+, p (55.0%) | 30S | 5/2(+#) | ||
| β+ (40.4%) | 31Cl | ||||||||
| β+, 2p (2.48%) | 29P | ||||||||
| β+, 3p (2.1%) | 28Si | ||||||||
| 32Ar | 18 | 14 | 31.9976380(19) | 98(2) ms | β+ (56.99%) | 32Cl | 0+ | ||
| β+, p (43.01%) | 31S | ||||||||
| 32mAr | 5600(100)# keV | unknown | 5-# | ||||||
| 33Ar | 18 | 15 | 32.9899257(5) | 173.0(20) ms | β+ (61.35%) | 33Cl | 1/2+ | ||
| β+, p (38.65%) | 32S | ||||||||
| 34Ar | 18 | 16 | 33.9802712(4) | 844.5(34) ms | β+ | 34Cl | 0+ | ||
| 35Ar | 18 | 17 | 34.9752576(8) | 1.775(4) s | β+ | 35Cl | 3/2+ | ||
| 36Ar | 18 | 18 | 35.967545106(29) | Observationally Stable | 0+ | 0.003336(4) | |||
| 37Ar | 18 | 19 | 36.96677632(22) | 35.04(4) d | EC | 37Cl | 3/2+ | ||
| 38Ar | 18 | 20 | 37.9627324(4) | Stable | 0+ | 6.29(1)×10−4 | |||
| 39Ar | 18 | 21 | 38.964313(5) | 269(3) a | β− | 39K | 7/2- | Trace | |
| 40Ar | 18 | 22 | 39.9623831225(29) | Stable | 0+ | 0.996035(4) | |||
| 41Ar | 18 | 23 | 40.9645006(4) | 109.61(4) min | β− | 41K | 7/2- | ||
| 42Ar | 18 | 24 | 41.963046(6) | 32.9(11) a | β− | 42K | 0+ | Trace | |
| 43Ar | 18 | 25 | 42.965636(6) | 5.37(6) min | β− | 43K | (5/2-) | ||
| 44Ar | 18 | 26 | 43.9649240(17) | 11.87(5) min | β− | 44K | 0+ | ||
| 45Ar | 18 | 27 | 44.9680400(6) | 21.48(15) s | β− | 45K | (1/2,3/2,5/2)- | ||
| 46Ar | 18 | 28 | 45.96809(4) | 8.4(6) s | β− | 46K | 0+ | ||
| 47Ar | 18 | 29 | 46.97219(11) | 1.23(3) s | β− (99%) | 47K | 3/2-# | ||
| β−, n (1%) | 46K | ||||||||
| 48Ar | 18 | 30 | 47.97454(32)# | 0.48(40) s | β− | 48K | 0+ | ||
| 49Ar | 18 | 31 | 48.98052(54)# | 170(50) ms | β− | 49K | 3/2-# | ||
| 50Ar | 18 | 32 | 49.98443(75)# | 85(30) ms | β− | 50K | 0+ | ||
| 51Ar | 18 | 33 | 50.99163(75)# | 60# ms | β− | 51K | 3/2-# | ||
| 52Ar | 18 | 34 | 51.99678(97)# | 10# ms | β− | 52K | 0+ | ||
| 53Ar | 18 | 35 | 53.00494(107)# | 3# ms | β− | 53K | (5/2-)# | ||
| β−, n | 52K | ||||||||
Read more about this topic: Isotopes Of Argon
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