试用分子轨道模型作出预言,O2+的键长与O2的键长哪个较短,N2+的键长与N2的键长哪个较短?为什么?
正确答案:
O2+:[He2]σ2s2σ*2s2σ2p2π2px2π2py2π*2px1;键级为2.5
O2:[He2]σ2s2σ*2s2σ2p2π2px2π2py2π*2px1π*2py1;键级为2,键级越小,键长越长。
N2+:[He2]σ2s2σ*2s2π2px2π2py2σ2p1;键级为2
N2:[He2]σ2s2σ*2s2π2px2π2py2σ2p2;键级为0,故N2+的键长比N2短。
O2:[He2]σ2s2σ*2s2σ2p2π2px2π2py2π*2px1π*2py1;键级为2,键级越小,键长越长。
N2+:[He2]σ2s2σ*2s2π2px2π2py2σ2p1;键级为2
N2:[He2]σ2s2σ*2s2π2px2π2py2σ2p2;键级为0,故N2+的键长比N2短。
答案解析:有
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