Question

IN CO molecule . Why Carbon has 2 non bonding electrons . it made triple bond with Oxygen .

Answer 1

Carbon makes 3 bonds with O in CO but out of them only 2 are covalent bonds and the third one is a dative bond.
C has 4 electrons in its valence shell and O has 6 electrons in its valence shell
While forming covalent bond C shares 2 electrons with 2 electrons of O to fulfil the octet of O but by this bonding octet of C is not fulfilled. So oxygen gives up it's 2 more electrons to share between C and O and thus forms a dative bond. Note that in the dative bond C has not contributed any electrons so it is left with 2 lone pairs of electrons or 2 non bonded electrons.

HOPE IT HELPS..... :-)

Answer 2

hello there !!!

First of all , Oxygen can't made triple bond because Oxygen is a divalent element..

Carbon has two non bonding electrons because it follow...
Non bonding Electron pair repulsion
It occur only when the central atom belong to 2nd period or any side groups are larger in size , that means they may be belong to third , fourth period ....


:C : :O:
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hope it helps you