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20
Protons?
79
Electrons?
7
Protons?
10
Neutrons?
19
Protons?
14
Neutrons?
16
Neutrons?
6
Neutrons?
95
Atomic number?
92
Atomic number?
27
Electrons?
30
Electrons?
86
Protons?
259
Atomic mass?
127
Atomic mass?