Chemistry-Ionic Bonding additional
- Created by: leah
- Created on: 12-06-13 13:16
Ionic Bonds- How are electrons arranged?
Electrons are not evenly spread out but exist in layers called shells the arrangement of shells is often called the electron configuration.
the first shell can only hold up to 2 electrons and then from that its up to 8 electrons
for example Potassium
1st shell= 2 electrons
2nd shell= 8 electrons
3rd shell=8 electrons
4 shell=1 electron
due to potassium having 4 shell this means its placed in period 4 of the periodic table and due to it having one electron in the outer shell this means its placed in group one in the periodic table. so group 1, period 4 =Potassium
An important feature of a subatomic particle is their electrical charge
protons are positivley charged
Neutrons are neutral
electrons are negativley charged
atoms have equal numbers of protons and electrons, which means their overall charge is 0
example
Sodium
23
NA
11
11 positive protons add 11 neagtive electrons gives an overall chargarge of 0
Becoming an Ion
Elements want to become stable. A stable element is one where it has a full compliment of electrons in its outer shell. some elements like the noble gases already have a full outer shell. the noble…
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