Atomic Weights and Isotopic Compositions for Dysprosium
 Isotope   Relative
Atomic Mass
 
   Isotopic
  Composition  
Standard
Atomic Weight
 
 Notes 
 
66 Dy 156 155.924 2847(17)   0.000 56(3)  162.500(1) g
158 157.924 4159(31)   0.000 95(3)
160 159.925 2046(20)   0.023 29(18)
161 160.926 9405(20)   0.188 89(42)
162 161.926 8056(20)   0.254 75(36)
163 162.928 7383(20)   0.248 96(42)
164 163.929 1819(20)   0.282 60(54)

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