Number of σ and π bonds in C2 molecule

Number of σ and π bonds in C2 molecule is/are:

A) 1σ and 1π

B) 1σ and 2π

C) 2π only

D) 1σ and 3π

[참고] MO of C2

▶ electronic configuration for C2

> (σ1s)^2 (σ*1s)^2 (σ2s)^2 (σ*2s)^2 (π2px)^2 (π2py)^2

답: C) 2π only

[그림] Lewis structure of C2.

The Lewis structure and the MO diagram both predict

two bonds and a lone pair of electrons on each carbon atom,

however the Lewis structure predicts one σ and one π bond

while the MO diagram predicts two π bonds.

[키워드] MO of C2 기준, C2 루이스 기준, C2 루이스 구조 기준