Respostas

2014-08-04T14:08:23-03:00
A)Z=P=E
Protons=26
Eletrons=26

N=A-Z
N=56-26
Neutron=30

b)Z=24 A=23
Z=P=E
Protons=24
Eletrons=24

N=A-Z
N=24-23
Neutron=1

c)Z=P=E
P=89
E=89

N=A-Z
N=201-89
N=111
A melhor resposta!
2014-08-04T14:15:38-03:00
A) Z =26 A=56 N=30
b) Z=24 A=23 N= -1
c) Z=89 A=201 N=112
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