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11 Feb 2009 17:38:36 IST

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why 4 covalent bonds cnnt be frmd between 2 carbon atoms????(to satisfy valency of carbon)

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why 4 covalent bonds cnnt be frmd between 2 carbon atoms????(to satisfy valency of carbon)

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Bhaskar Tetarbe

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12 Feb 2009 10:03:13 IST

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We know C has 1s,2s and one 2p. A pi bond involves either p or d orbital. The 2nd and 3rd bond makes for 2 pi bonds involving one 2p orbital. Since, s-orbitals can't form pi bonds, therefore 4 covalent bonds cannot be formed between 2 carbon atoms.

pulkit goyal

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12 Feb 2009 21:34:37 IST

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but 2p cn accomodate 6 electrons so 3 pi bnds are possible through p orbiltals..............n the left 1 sigma bond cn be frmed using 2s orbital.

10904him

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12 Feb 2009 21:38:17 IST

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No confusions -------Obviously you require space to form a fourth bondThere is electron cloud on all sides of a triple bond and so you cant adjust another bond.Further the p-z orbitals are oriented away from both c-atoms and cannot form a bond.

Ankur

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13 Feb 2009 09:40:03 IST

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'Bhaskar' is absolutely right.

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