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Structure:

Number of Energy Levels: 3
    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 2

Number of Protons: 12
Number of Electrons: 12
Number of Neutrons: 12
Charge: 2+
Electron Configuration: 1s2, 2s2, 3p6, 3s2

Magnesium is a hexagonal close packed crystalline structure that is malleable to heat and unreactive to cold water..

http://www.encyclopedia.com/html/m/magnesiu.asp

 

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