Describe the factors which affect the strength of van der Waal's forces in simple molecules.For each factor,give relevant named examples and compare the strengths of van der Waal's forces.

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Describe the factors which affect the strength of van der Waal's forces in simple molecules.For each factor,give relevant named examples and compare the strengths of van der Waal's forces.
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Describe the factors which affect the strength of van der Waal's forces in simple molecules.For each factor,give relevant named examples and compare the strengths of van der Waal's forces.
Describe the factors which affect the strength of van der Waal's forces in simple molecules.For each factor,give relevant named examples and compare the strengths of van der Waal's forces.

Describe the factors which affect the strength of van der Waal's forces in simple molecules.For each factor,give relevant named examples and compare the strengths of van der Waal's forces.
题目：
描述在简单分子中影响范德华力强度的因素.对每一个因素,给出相关的已知名的示例并且比较范德华力的强度.
答案：
取向力,构成范德华力的三大因素之一.取向力的大小与偶极距的平方成正比.dipole-dipole force,one of the three factors which form Van der Waal's forces. The strength of dipole-dipole force is in direct propotion to the square of dipole moment.
诱导力,在极性分子和非极性分子之间以及极性分子和极性分子之间都存在诱导力.诱导力的大小与非极性分子极化率和极性分子偶极距的乘积成正比.
induction force,instantaneous dipole-induced dipole forces.
色散力,非极性分子之间的相互作用.色散力的大小主要取决于分子量.
dispersion force.Dispersion force depends on the size of molecular weight.

描述影响van der Waal的力量力量在简单的分子的因素。对于每个因素，举相关的名为例子并且比较van der Waal的力量力量

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