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键级怎么计算
更新时间: 2020-10-29 00:00:00  

键级有两种算法:

1、学会分子结构d共振式的书写,单键键级为1,双键为2……将你要算的那根键在每种共振式中的键级加权平均一下就得到最终的键级了。如硝酸根的NO键键级为(1+2+2)/3=5/3。

2、学过分子轨道理论的话,可以写出该分子的分子轨道,然后利用成键电子数减反键电子数除以2得到键级。键级代表着该键的长度以及强度。键级越大,键长越短,键能越大。

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