Name: Magnesium Symbol: Mg Atomic Number: 12 Atomic Mass: 24.305 amu Melting Point: 650.0 °C (923.15 K, 1202.0 °F) Boiling Point: 1107.0 °C (1380.15 K, 2024.6 °F) Number of Protons/Electrons: 12 Number of Neutrons: 12 Classification: Alkaline Earth Crystal Structure: Hexagonal Density @ 293 K: 1.738 g/cm 3 Color: grayish Atomic Structure. Magnesium is a chemical element with symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (Group 2, or alkaline earth metals) of the periodic table:they each have the same electron configuration in their outer electron shell producing a similar crystal structure. The atomic number of magnesium is 12. Therefore, the last filled orbital is the 3s orbital with two electrons pairing up. Therefore, n = 3 (principal energy level for 3s) and l = 0 (for s orbital). Mg I Ground State 1s 2 2s 2 2p 6 3s 2 1 S 0 Ionization energy 61671.05 cm-1 (7.646235 eV) Ref. KM91a Mg II Ground State 1s 2 2s 2 2p 6 3s 2 S 1 / 2 Ionization energy 121267.64 cm-1 (15.03527 eV) Ref.
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Atomic Number Of Mg 2+
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Atomic Number Of Mg Al Si Is Respectively
Answer: Twelve
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Atomic Number Of Mgo
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Welcome to the page with the answer to the clue The atomic number of magnesium.
Atomic Number Of Mg 25
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Answer: Twelve
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