56 p= hierro
Fe n= 29
26 e= hierro
19 p= potasio
F n= 10
9 e= flúor
70 p= iterbio
Zn n= 38
30 e= 30
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56 p= hierro
Fe n= 29
26 e= hierro
19 p= potasio
F n= 10
9 e= flúor
70 p= iterbio
Zn n= 38
30 e= 30