ELECTRON CONFIGURATION

ELECTRON CONFIGURATION

 electron distribution in the skins atom called configuration.
 Skin's first atom (the most close to the core) is given the symbol K, skin-2 to be the symbol of L
 The maximum number of electrons on the skin of each meet 2n2 formula (n = number skin).
Example:
Skin K (n = 1) a maximum of 2 x 12 = 2 electrons
Skin L (n = 2) a maximum of 2 x 22 = 8 electrons
Skin M (n = 3) maximum of 2 x 32 = 18 electrons
Skin N (n = 4) a maximum of 2 x 42 = 32 electrons
Skin O (n = 5) a maximum of 2 x 52 = 50 electrons
Note:
Although the skin O, P and Q can accommodate more than 32 electrons, but the fact is skins are not fully used.

Steps Writing electron configuration:
1. Skin skin-filled skin from K and L
2. Especially for the primary (class A):
The number of skin = number of
The number of valence electrons = group number
3. The maximum number of electrons on the outside skin (valence electrons) is 8.
o valence electrons have a role in the formation of bonds between atoms in a compound.
o The nature of a chemical element is also determined by electron valence. Therefore, the elements that have the same valence electrons, will have a similar chemical nature.
4. For the main elements (group A), electron configuration can be determined as follows:
a) Some may be filled with full leather electrons.
b) Determine the number of electrons remaining.
 If the number of electrons remaining> 32, filled with leather next 32 electrons.
 If the number of electrons remaining <32, the next skin filled with 18 electrons.
 If the number of electrons remaining <18, the next skin filled with 8 electrons.
 If the number of electrons remaining <8, all the electrons on the skin next.