2.1 Chlorine (Cl2)

Before considering how two chlorine atoms form a chemistry bond you require to think about the ideal valence electrons.


How many valence electron does chlorine have?

The digital configuration that chlorine is: 1s2 2s2 2p6 3s2 3p5. Alternatively this have the right to be written 3s2 3p5 in other words the main point electrons room 1s2 2s2 2p6 equivalent to the digital configuration of the noble gas neon. Hence the valence electrons are 3s2 3p5 i.e. There are seven.

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Because chlorine has actually an electronic configuration 1s2 2s2 2p6 3s2 3p5, all it requirements is a solitary electron to give it 8 electron in its external shell, and thus the electronic configuration of argon.


Suggest just how chlorine could acquire this extra electron?

It can share one electron with an additional atom, or one electron could be transferred to it from an additional atom.


In chlorine one electron pair is shared between the 2 atoms in Cl2.

This is referred to as covalent bonding.

So by share electrons through covalent shortcut formation, atoms space able to to fill their valence shell and also so attain a noble gas configuration.


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Previous 2 Lewis structures – a starting point
Next 2.2 salt chloride
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