Respuesta:
Li (litio)
A=7
Z=3
p+=3
E-=3
N°= 4
Be (berilio)
A=9
Z=4
p+=4
E-=4
N°=5
Ba (bario)
A=138
Z=56
p+=56
E-=56
N°= 82
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Respuesta:
Li (litio)
A=7
Z=3
p+=3
E-=3
N°= 4
Be (berilio)
A=9
Z=4
p+=4
E-=4
N°=5
Ba (bario)
A=138
Z=56
p+=56
E-=56
N°= 82