一道英语化学题.求讲解a molecule of a substance with physical properties primary explained by London fores is a,SiC b,KCl c,Na3P d,PH3

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一道英语化学题.求讲解a molecule of a substance with physical properties primary explained by London fores is a,SiC b,KCl c,Na3P d,PH3
一道英语化学题.求讲解
a molecule of a substance with physical properties primary explained by London fores is
a,SiC b,KCl c,Na3P d,PH3

一道英语化学题.求讲解a molecule of a substance with physical properties primary explained by London fores is a,SiC b,KCl c,Na3P d,PH3
因为分子的物理性质被称为london fores的物质:
london fores何解?网上都查不到.
还是说那个应该是london force,分子间的色散作用力就是london dispersion force .
那么就选PH3,分子量存在色散力.SiC是原子晶体,整个像个大分子连成空间网状,没有色散力.KCl,Na3P都是离子化合物.
所以选PH3.