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Magnesium is a metal element. There are 12 electrons in a single atom.
Every isotope of magnesium has 12 electrons.
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Mg has 2 valence electrons.
Magnesium's atomic number is 12. Thus, neutral magnesium would have 12 electrons. Mg2+ therefore has 2 less electrons, or 10.
Magnersium is a non metal element. There are 12 electrons in a single atom.
Atom Mg-26 in the ground state has 2 valence electrons. Magnesium (Mg) has an atomic number of 12, so it has 12 electrons in total. In the ground state, the electron configuration is [Ne] 3s2, which means it has 2 electrons in the outermost shell (valence electrons).
Any atom of magnesium will have 12 protons.Neutral atoms of Mg-24 will have 12 neutrons and 12 electrons. Mg-25 has 13 neutrons and Mg-26 has 14 neutrons. A magnesium ion will have either 10 or 11 electrons.
Mg or Magnesium has 2 electrons in its Valence shell. If you have the right Periodic Table it should have numbers 1A, 2A,... 3B, ect listed above each column. These numbers represent the number of Electrons in the valence shell of all the elements in that Column.
A neutral magnesium atom has 12 protons ans 12 electrons.