6. The configuration (σ2s)²(σ2s*)²(π2py)¹(π2px)¹ is the molecular orbital description for the ground
state of which of the following species?
(A) Be₂
(B) Li₂⁺
(C) B₂²⁻
(D) B₂
(E) C₂

答案：(D) B₂ 解析：題目給出的...