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physical object > natural object > particle > element > column grouped element > transition metal > iron > iron 56
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iron 56 comparison table
Subject has nuclear spin is a kind of has number of neutron has definition has number of nucleon is an instance of has symbol has use has atomic mass has natural abundance
iron recycled oceanic element lustrous, silvery and soft or workable metal when absolutely pure  Festeel etc...  
iron 56I = 0+ h/2π 30 56iron56Feisotopically enriched samples available for experimental purposes55.93493991.72

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