For stability, the atom should fulfill the rule of octet, but in graphene the carbon has one of the 2p electron is unbonded, then how it become so stable? Please explain deeply. Thank you
Brajesh Kumar
Graphene can be thought of as a polymer of benzene. 3 electrons of a carbon atom in benzene are in cp3 hybridization and their orbitals overlap with other similar orbitals of other carbon atoms. The 4 p electron is conjugated with the remaining 5 p electrons of 5 carbon atoms and forms a common pi-electron bond. Around carbon there are 3 sigma electron pairs and one pi-electron pair, which is shared between 6 carbon atoms, i.e. octet.
Dear Brajesh Kumar many thanks for your interesting and fundamental technical question. In addition to the helpful answers provided by Yuri Mirgorod and Pankaj Singh Rawat please have a look at the following relevant article:
The Potential Power of Graphene
http://sijr.ac/wp-content/uploads/2016/10/The-Potential-Power-of-Graphene..pdf
This paper can bee freely downloaded as public full text from the internet. It contains a detailed explanation ofcthe bonding situation in graphene. You could also check articles detailing the bonding in graphite. After all, graphene represents single graphite layers.
Dear Brajesh Kumar,
Greetings, Please note that the forces between sub-structures is another parameter to study the stability of considered structures.
Regards, Saeed
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