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1. Magnesium
Atomic Number - 12
Atomic Mass - 24
Number of Proton -
Number of Electron -
Number of Neutron -
2. Ceslum
Atomic Number -
Atomic Mass - 133
Number of Proton - 55
Number of Electron -
Number of Neutron -
3.Iron
Atomic Number -
Atomic Mass - 56
Number of Proton -
Number of Electron - 26
Number of Neutron -
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Sagot :

Enrilejanchristianviz

Explanation:

1. Number of protons - 12

Numbers of electrons - 12

Numbers of neutrons- 12

2. Atomic number - 55

Number of electrons- 55

Numbee of neutrons- 78

3. Atomic number- 26

Number of protons- 26

Number of Neutrons- 30

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