Mg 2+
Has the same electron configuration as neon. Two electrons lost to do this.
study island answer- It gives up two electrons
Sodium and magnesium form positive ions because they lose electrons in order to have a filled valence shell, like a noble gas. A sodium atom loses one electron so that its ion has a 1+ charge and the noble gas configuration of neon. A magnesium atom loses two electrons so that its ion has a charge of 2+ and the noble gas configuration of neon.
When aluminum (Al, #13) reacts, it loses its three valence electrons to achieve the same electron configuration as neon (Ne, #10.) That configuration is 1s22s22p6. So yes, Al+3 has the same configuration as neon.
Magnesium is the period 3 alkaline earth metal. Thus, its electron configuration is 1s2 2s2 2p6 3s2. The shorthand version of this is [Ne] 3s2 since neon's electron configuration is 1s2 2s2 2p6.
Lithium has one valence electron. It is much easier for an atom to lose one electron than gain seven more. Lithium looses this one electron to achieve a full outer shell (the next inside shell is full).
The element magnesium (atomic number 12) has the electron configuration of1s2 2s2 2p6, 3s2or the noble gas abbreviation [Ne] 3s2(see related link)The electron configuration for neutral magnesium (Mg) is 1s22s22p63s2. The ion, Mg2+, has two electrons fewer, so the outer two electrons are removed from the electron configuration. This changes the electron configuration to 1s22s22p6, which is the same electron configuration as the noble gas neon.
Losing 2 electrons gives it 10 - which is the same electron configuration as the noble (and extremely stable) gas Neon.
Neon has 2 and 8 electrons per shell; the electron configuration is [He]2s2.2p6.
study island answer- It gives up two electrons
Positive. It wants to lose two electrons to get to the electron configuration of its nearest noble gas, Ne (Neon).
Neon: In forming magnesium oxide from the elements, two electrons leave each magnesium atom and transfer to an oxygen atom. Therefore, both the magnesium cation and the oxygen anion have the electron configuration of neon, which has an atomic number 2 greater than oxygen and 2 less than magnesium.
Helium's electron configuration is 1s2. Neon's electron configuration is 1s22s22p6. All of the rest of the noble gases, like neon, have the maximum number of electrons in their outermost s and p orbitals (valence shells), which is eight.
Sodium and magnesium form positive ions because they lose electrons in order to have a filled valence shell, like a noble gas. A sodium atom loses one electron so that its ion has a 1+ charge and the noble gas configuration of neon. A magnesium atom loses two electrons so that its ion has a charge of 2+ and the noble gas configuration of neon.
When aluminum (Al, #13) reacts, it loses its three valence electrons to achieve the same electron configuration as neon (Ne, #10.) That configuration is 1s22s22p6. So yes, Al+3 has the same configuration as neon.
For Mg to acquire the same electron configuration as Neon, it must lose 2 of its valence electrons. It thus obtains a 2+ charge. The 2 electrons that it loses can go to an accepting atom, such as O, S, Cl, etc. to form an ionic bond, where the accepting atom has a negative charge.
Magnesium has an atomic number of 12, which means it has 12 electrons. To achieve a noble gas configuration, magnesium would need to lose both of its valence electrons. This can be achieved through chemical reactions, where magnesium can form ionic compounds by transferring its electrons to other elements, such as oxygen or chlorine.
Aluminum needs to lose 3 electrons to gain a noble gas electron configuration.