Number of sigma and pi bond in c2 molecule


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Number of sigma and pi bond in C2 molecule is

Answered by admin @



\bold{\text{number of sigma bond = 0}}
\bold{\text{number of pi bond = 2}}

actually , configuration of C₂ molecule is σ1s² , σ*1s² , σ2s², σ*2s² , π2py² ≈ π2pz²
Here, you see that outermost electrons of C₂ molecule { e.g., π2py² ≈ π2pz²} is 4 . And it belongs to π molecular orbitals . Also you know in bond formation only valance electrons or outermost electrons participate . Hence, in C₂ molecule only π bond exists and number of pi bond = 2


For batter understanding see MO diagram. MO diagram shows that there are two sets of paired electrons in a degenerate pi bonding set of orbitals. Hence, in C₂ molecule only pi bond exists and number of pi bonds = 2

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