Изотопи на арсенот

Арсенот (<sub>33</sub>As) има 32 познати изотопи и најмалку 10 изомери. Само еден од овие изотопи, <sup>75</sup>As, е стабилен. Како таков, тој се смета за моноизотопски елемент. Најдолговечниот радиоизотоп е <sup>73</sup>As со време на полураспад од 80 дена.
1 Список на изотопи
<sup>64</sup>As, 33, 31, 63,95756(22)#, 69,0(14) мс, β<sup>+</sup>, <sup>64</sup>Ge, 0+#
β<sup>+</sup>, p?, <sup>63</sup>Ga
<sup>65</sup>As, 33, 32, 64,949611(91), 130,3(6) мс, β<sup>+</sup>, <sup>65</sup>Ge, 3/2−#
β<sup>+</sup>, p?, <sup>64</sup>Ga
<sup>66</sup>As, 33, 33, 65,9441488(61), 95,77(23) мс, β<sup>+</sup>, <sup>66</sup>Ge, 0+
<sup>66m1</sup>As, 1356,63(17) keV, 1,14(4) μс, IT, <sup>66</sup>As, 5+
<sup>66m2</sup>As, 3023,(3) keV, 7,98(26) μс, IT, <sup>66</sup>As, 9+
<sup>67</sup>As, 33, 34, 66,93925111(48), 42,5(12) с, β<sup>+</sup>, <sup>67</sup>Ge, (5/2−)
<sup>68</sup>As, 33, 35, 67,9367741(20), 151,6(8) с, β<sup>+</sup>, <sup>68</sup>Ge, 3+
<sup>68m</sup>As, 425,1(2) keV, 111(20) нс, IT, <sup>68</sup>As, 1+
<sup>69</sup>As, 33, 36, 68,932246(34), 15,2(2) мин, β<sup>+</sup>, <sup>69</sup>Ge, 5/2−
<sup>70</sup>As, 33, 37, 69,9309346(15), 52,6(3) мин, β<sup>+</sup>, <sup>70</sup>Ge, 4+
<sup>70m</sup>As, 32,046(23) keV, 96(3) μс, IT, <sup>70</sup>As, 2+
<sup>71</sup>As, 33, 38, 70,9271136(45), 65,30(7) ч, β<sup>+</sup>, <sup>71</sup>Ge, 5/2−
<sup>72</sup>As, 33, 39, 71,9267523(44), 26,0(1) ч, β<sup>+</sup>, <sup>72</sup>Ge, 2−
<sup>73</sup>As, 33, 40, 72,9238291(41), 80,30(6) д, EC, <sup>73</sup>Ge, 3/2−
<sup>73m</sup>As, 427,902(21) keV, 5,7(2) μс, IT, <sup>73</sup>As, 9/2+
<sup>74</sup>As, 33, 41, 73,9239286(18), 17,77(2) д, β<sup>+</sup> (66%), <sup>74</sup>Ge, 2−
β<sup>−</sup> (34%), <sup>74</sup>Se
<sup>75</sup>As, 33, 42, 74,92159456(95), Стабилен, 3/2−, 1,0000
<sup>75m</sup>As, 303,9243(8) keV, 17,62(23) мс, IT, <sup>75</sup>As, 9/2+
<sup>76</sup>As, 33, 43, 75,92239201(95), 1,0933(38) д, β<sup>−</sup>, <sup>76</sup>Se, 2−
<sup>76m</sup>As, 44,425(1) keV, 1,84(6) μс, IT, <sup>76</sup>As, (1)+
<sup>77</sup>As, 33, 44, 76,9206476(18), 38,79(5) ч, β<sup>−</sup>, <sup>77</sup>Se, 3/2−
<sup>77m</sup>As, 475,48(4) keV, 114,0(25) μс, IT, <sup>77</sup>As, 9/2+
<sup>78</sup>As, 33, 45, 77,921828(10), 90,7(2) мин, β<sup>−</sup>, <sup>78</sup>Se, 2−
<sup>79</sup>As, 33, 46, 78,9209484(57), 9,01(15) мин, β<sup>−</sup>, <sup>79</sup>Se, 3/2−
<sup>79m</sup>As, 772,81(6) keV, 1,21(1) μс, IT, <sup>79</sup>As, (9/2)+
<sup>80</sup>As, 33, 47, 79,9224744(36), 15,2(2) с, β<sup>−</sup>, <sup>80</sup>Se, 1+
<sup>81</sup>As, 33, 48, 80,9221323(28), 33,3(8) с, β<sup>−</sup>, <sup>81</sup>Se, 3/2−
<sup>82</sup>As, 33, 49, 81,9247387(40), 19,1(5) с, β<sup>−</sup>, ''<sup>82</sup>Se'', (2−)
<sup>82m</sup>As, 131,6(5) keV, 13,6(4) с, β<sup>−</sup>, ''<sup>82</sup>Se'', (5-)
<sup>83</sup>As, 33, 50, 82,9252069(30), 13,4(4) с, β<sup>−</sup>, <sup>83</sup>Se, 5/2−#
<sup>84</sup>As, 33, 51, 83,9293033(34), 3,16(58) с, β<sup>−</sup> (99,72%), <sup>84</sup>Se, (2−)
β<sup>−</sup>, n (,28%), <sup>83</sup>Se
<sup>85</sup>As, 33, 52, 84,9321637(33), 2,022(7) с, β<sup>−</sup>, n (62,6%), <sup>84</sup>Se, (5/2−)
β<sup>−</sup> (37,4%), <sup>85</sup>Se
<sup>86</sup>As, 33, 53, 85,9367015(37), 945(8) мс, β<sup>−</sup> (64,5%), <sup>86</sup>Se, (1−,2−)
β<sup>−</sup>, n (35,5%), <sup>85</sup>Se
β<sup>−</sup>, 2n?, <sup>84</sup>Se
<sup>87</sup>As, 33, 54, 86,9402917(32), 492(25) мс, β<sup>−</sup> (84,6%), <sup>87</sup>Se, (5/2−,3/2−)
β<sup>−</sup>, n (15,4%), <sup>86</sup>Se
β<sup>−</sup>, 2n?, <sup>85</sup>Se
<sup>88</sup>As, 33, 55, 87,94584(22)#, 270(150) мс, β<sup>−</sup>, <sup>88</sup>Se
β<sup>−</sup>, n?, <sup>87</sup>Se
<sup>89</sup>As, 33, 56, 88,95005(32)#, 220# мс [>150 нс], β<sup>−</sup>?, <sup>89</sup>Se, 5/2−#
β<sup>−</sup>, n?, <sup>88</sup>Se
β<sup>−</sup>, 2n?, <sup>87</sup>Se
<sup>90</sup>As, 33, 57, 89,95600(43)#, 70# мс [>300 нс], β<sup>−</sup>?, <sup>90</sup>Se
β<sup>−</sup>, n?, <sup>89</sup>Se
β<sup>−</sup>, 2n?, <sup>88</sup>Se
<sup>90m</sup>As, 124,5(5) keV, 220(100) нс, IT, <sup>90</sup>As
<sup>91</sup>As, 33, 58, 90,96082(43)#, 100# мс [>300 нс], β<sup>−</sup>?, <sup>91</sup>Se, 5/2−#
β<sup>−</sup>, n?, <sup>90</sup>Se
β<sup>−</sup>, 2n?, <sup>89</sup>Se
<sup>92</sup>As, 33, 59, 91,96739(54)#, 45# мс [>300 нс], β<sup>−</sup>?, <sup>92</sup>Se
β<sup>−</sup>, n?, <sup>91</sup>Se
β<sup>−</sup>, 2n?, <sup>90</sup>Se
<sup>93</sup>As, 33, 60
<sup>94</sup>As, 33, 61
<sup>95</sup>As, 33, 62
2 Наводи
* Isotope masses from:
*** Half-life, spin, and isomer data selected from the following sources.
******* A.Shore, A. Fritsch, M. Heim, A. Schuh, M. Thoennessen. ''Discovery of the Arsenic Isotopes.'' .