Magnesium is in Group 2 of the Periodic Table, so it has two outermost electrons. To have a full complement of e- in its outer shell, it must lose 2, hence, it becomes an Mg2+ 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.
The outer shell of nickel is not full. Nickel has an electron configuration of 4s2 3d8, so its outer shell has two electrons which is not the maximum it can hold (which would be 8).
Oxygen needs 2 more valence electrons to have a full outer shell. Oxygen has 6 valence electrons, and a full outer shell for oxygen is achieved at 8 valence 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.
Calcium has two electrons in its outermost shell (the 4s subshell). To achieve a full outer shell, which would correspond to the stable electron configuration of neon, calcium must lose these two electrons. Therefore, calcium loses two electrons to gain a full outer shell.
it needs six more electrons to have a full outer valence shell.
Magnesium, in the second group, can either gain six electrons or lose two electrons to achieve a full outer shell.
Calcium has a full 4s sublevel, but does not have a full "outer shell", per se, because it is not a noble gas.
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.
Magnesium is in the second group (column) of the periodic table, so it has two valence electrons or electrons in its outer shell. so in order for it to fulfill the octet rule (get eight electrons in its valence shell most of the time), then it would rather lose two electrons and have a full valence shell than gain six electrons.
There are many elements which have no unpaired electrons in their outer shells. The Noble gasses all have closed shells of valence electrons. The alkali earth metals (Beryllium, Magnesium, Calcium etc) also have no unpaired electrons, although their outer shell is not entirely full.
Yes, magnesium achieves the octet state in magnesium chloride by losing two electrons to chlorine, which has seven valence electrons. This results in magnesium having a full outer shell with eight electrons.
Because the element magnesium is in the Group II category, it is has two electrons in its outer shell, donating them to leave it with a 2+ charge. Therefore, when it is in the ionized form, it is Mg2+
Magnesium chloride is an ionic compound. Magnesium has 2 valence electrons, and chlorine has 7. According to the octet rule, each element will bond in such a way that it ends up having 8 electrons in its outer shell--either by adding electrons to its outer shell until it has 8, or by losing all the electrons in its outer shell (that way, the next-largest electron shell--which is already full--becomes the new outer shell). Since magnesium has 2 valence electrons, it will lose two electrons (it's easier to go 2 - 2 = 0 than to go 2 + 6 = 8). Chlorine has 7, so it will gain an electron and have a full (8-electron) outer shell. There must therefore be two chlorines for every magnesium: each chlorine accepts one of the two electrons donated by magnesium. Magnesium forms two ionic bonds: one to each chloride ion.
Sodium and magnesium have a valency of 1 because they have 1 electron in their outermost energy level. By losing this electron, they achieve a full outer shell and become stable with a positive charge of +1.
Beryllium has 2 outer shell electrons. Its full electronic configuration is:- 1s2, 2s2
Neon is a noble gas, which means all it's electrons shells are full. innermost shell has space for 2 electrons, followed by 8 in the next shell, 8 in the next shell and so on. Answer therefore is 2.