2
It'll have to lose two to have a stable octet.
Magnesium will lose 6 electrons to achieve a stable octet (2 electrons per atom) and become Mg2+, while nitrogen will gain 6 electrons (3 electrons per atom) to form N3-. This results in the formation of Mg3N2 with a 3:2 ratio of magnesium to nitrogen atoms.
When the atom has 8 valence electrons.
A magnesium atom will lose two electrons to achieve a stable octet configuration, forming a Mg2+ ion. A chlorine atom will gain one electron to achieve a stable octet configuration, forming a Cl- ion. When magnesium and chlorine react, magnesium will transfer electrons to chlorine, resulting in the formation of the ionic compound magnesium chloride.
Mg or magnesium has 2 electrons in its outer shell. O or oxygen is 2 electrons short of a full shell. The oxygen takes up the magnesium's spare electrons and gets a full outer shell and a charge of 2- (cos of the extra electrons). The magnesium gets a full outer shell cos it lost the spare 2 and gets a charge of 2+ (cos it lost 2 electrons that were balancing out the protons in the nucleus).So, one atom completely donates electrons to another atom. That's ionic bonding.
The outermost electrons, found in the highest energy level, are the most likely to be lost in a magnesium atom. Magnesium has 2 electrons in its outermost energy level, so it tends to lose these electrons to achieve a stable electron configuration.
The magnesium has 2 valence electron while the oxygen misses 2 electron to complete its octet. An atom is always more stable when it has 8 valence electrons. The magnesium will create an ionic bond with the oxygen by giving its 2 electrons to form Magnesium Oxide, MgO.
Neutral atom of magnesium has 12 electrons.
When magnesium loses 2 electrons, it achieves a full outer electron shell with 8 electrons, similar to the stable configuration of noble gases. This full outer shell configuration makes the magnesium atom more stable because it lowers its overall energy level, making it less likely to react with other atoms to gain additional electrons.
Magnesium has a charge of 2+ and oxygen 2- Magnesium will lose the two "extra electrons" in its valence shell when creating an ionic bond with oxygen. The oxygen will gain these two electrons.
Magnesium tends to lend 2 electrons to achieve a stable electron configuration. Magnesium's electron configuration is [Ne] 3s^2, so by donating 2 electrons, it achieves a full outer shell and becomes a stable Mg^2+ ion.
An atom with six electrons is generally more stable than an atom with one electron. This is because atoms tend to be more stable when their outer electron shell is filled with electrons. Atoms strive to achieve a stable electron configuration, such as a full outer shell, which contributes to their overall stability.