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 | |||||||||
| 45Fe | 26 | 19 | 45.01458(24)# | 1.89(49) ms |
β+ (30%) | 45Mn | 3/2+# | ||
| 2p (70%) | 43Cr | ||||||||
| 46Fe | 26 | 20 | 46.00081(38)# | 9(4) ms |
β+ (>99.9%) | 46Mn | 0+ | ||
| β+, p (<.1%) | 45Cr | ||||||||
| 47Fe | 26 | 21 | 46.99289(28)# | 21.8(7) ms | β+ (>99.9%) | 47Mn | 7/2-# | ||
| β+, p (<.1%) | 46Cr | ||||||||
| 48Fe | 26 | 22 | 47.98050(8)# | 44(7) ms | β+ (96.41%) | 48Mn | 0+ | ||
| β+, p (3.59%) | 47Cr | ||||||||
| 49Fe | 26 | 23 | 48.97361(16)# | 70(3) ms | β+, p (52%) | 48Cr | (7/2-) | ||
| β+ (48%) | 49Mn | ||||||||
| 50Fe | 26 | 24 | 49.96299(6) | 155(11) ms | β+ (>99.9%) | 50Mn | 0+ | ||
| β+, p (<.1%) | 49Cr | ||||||||
| 51Fe | 26 | 25 | 50.956820(16) | 305(5) ms | β+ | 51Mn | 5/2- | ||
| 52Fe | 26 | 26 | 51.948114(7) | 8.275(8) h | β+ | 52Mn | 0+ | ||
| 52mFe | 6.81(13) MeV | 45.9(6) s | β+ | 52Mn | (12+)# | ||||
| 53Fe | 26 | 27 | 52.9453079(19) | 8.51(2) min | β+ | 53Mn | 7/2- | ||
| 53mFe | 3040.4(3) keV | 2.526(24) min | IT | 53Fe | 19/2- | ||||
| 54Fe | 26 | 28 | 53.9396105(7) | Observationally Stable | 0+ | 0.05845(35) | 0.05837-0.05861 | ||
| 54mFe | 6526.9(6) keV | 364(7) ns | 10+ | ||||||
| 55Fe | 26 | 29 | 54.9382934(7) | 2.737(11) a | EC | 55Mn | 3/2- | ||
| 56Fe | 26 | 30 | 55.9349375(7) | Stable | 0+ | 0.91754(36) | 0.91742-0.91760 | ||
| 57Fe | 26 | 31 | 56.9353940(7) | Stable | 1/2- | 0.02119(10) | 0.02116-0.02121 | ||
| 58Fe | 26 | 32 | 57.9332756(8) | Stable | 0+ | 0.00282(4) | 0.00281-0.00282 | ||
| 59Fe | 26 | 33 | 58.9348755(8) | 44.495(9) d | β- | 59Co | 3/2- | ||
| 60Fe | 26 | 34 | 59.934072(4) | 2.6×106 a | β- | 60Co | 0+ | trace | |
| 61Fe | 26 | 35 | 60.936745(21) | 5.98(6) min | β- | 61Co | 3/2-,5/2- | ||
| 61mFe | 861(3) keV | 250(10) ns | 9/2+# | ||||||
| 62Fe | 26 | 36 | 61.936767(16) | 68(2) s | β- | 62Co | 0+ | ||
| 63Fe | 26 | 37 | 62.94037(18) | 6.1(6) s | β- | 63Co | (5/2)- | ||
| 64Fe | 26 | 38 | 63.9412(3) | 2.0(2) s | β- | 64Co | 0+ | ||
| 65Fe | 26 | 39 | 64.94538(26) | 1.3(3) s | β- | 65Co | 1/2-# | ||
| 65mFe | 364(3) keV | 430(130) ns | (5/2-) | ||||||
| 66Fe | 26 | 40 | 65.94678(32) | 440(40) ms | β- (>99.9%) | 66Co | 0+ | ||
| β-, n (<.1%) | 65Co | ||||||||
| 67Fe | 26 | 41 | 66.95095(45) | 394(9) ms | β- (>99.9%) | 67Co | 1/2-# | ||
| β-, n (<.1%) | 66Co | ||||||||
| 67mFe | 367(3) keV | 64(17) µs | (5/2-) | ||||||
| 68Fe | 26 | 42 | 67.95370(75) | 187(6) ms | β- (>99.9%) | 68Co | 0+ | ||
| β-, n | 67Co | ||||||||
| 69Fe | 26 | 43 | 68.95878(54)# | 109(9) ms | β- (>99.9%) | 69Co | 1/2-# | ||
| β-, n (<.1%) | 68Co | ||||||||
| 70Fe | 26 | 44 | 69.96146(64)# | 94(17) ms | 0+ | ||||
| 71Fe | 26 | 45 | 70.96672(86)# | 30# ms |
7/2+# | ||||
| 72Fe | 26 | 46 | 71.96962(86)# | 10# ms |
0+ | ||||
Read more about this topic: Isotopes Of Iron
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