Rather than to give a simple number as answer, I suggest to look up Magnesium on wikipedia, where you will even find a picture with the electron configuration.
(And this method can be applied to answer the same question for any other element.)
Magnesium has three electron shells. The electron configuration is 2,8,2
Neptunium has 7 electron shells.
Magnesium has 3 electron shells.
The element in group V of the periodic table with 3 electron shells is Phosphorus (P). Group V elements have 5 valence electrons and the number of electron shells corresponds to the period number on the periodic table, so a Group V element with 3 electron shells is in period 3.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
The element magnesium has the same number of electron orbitals as sodium - both have three electron orbitals. Sodium and magnesium are in the same period on the periodic table, which means they have the same number of electron shells.
Magnesium has three electron shells. The electron configuration is 2,8,2
There are no difference in the number of shells in magnesium and sulphur. Both elements contain 3 shells. However, the total number of electrons in the shells are different. Magnesium has 12 electrons in its shells whereas sulphur has 16 electrons in its shell. In addition, the electrons in the valence shell (outermost shell) are also different. Magnesium has 2 electrons in its valence shell whereas sulphur has 6 electrons in its valence shell.
Neptunium has 7 electron shells.
No, iodine has four electron shells, marked as "K", "L", "M", and "N". The number of electron shells is determined by the electron configuration of an element.
The period of an element in the periodic table can be determined by the number of electron shells or energy levels that the element's atoms have. Each period on the periodic table corresponds to the number of electron shells occupied by the elements within that period.
Magnesium has 3 electron shells.
No, magnesium (Mg) has 3 atomic shells while sodium (Na) has 2 atomic shells. The number of atomic shells is determined by the number of electron shells in an atom.
A magnesium atom has 12 electrons arranged in 3 shells. The electron configuration of magnesium is 2-8-2, indicating that it has 2 electrons in the first shell, 8 in the second shell, and 2 in the third shell.
The element with 4 electron shells is potassium (K).
The element in group V of the periodic table with 3 electron shells is Phosphorus (P). Group V elements have 5 valence electrons and the number of electron shells corresponds to the period number on the periodic table, so a Group V element with 3 electron shells is in period 3.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.