For each set of molecules, rank the molecules in order of the expected strength
ID: 474210 • Letter: F
Question
For each set of molecules, rank the molecules in order of the expected strength of their London dispersion forces (from strongest to weakest). Cl_2,F_2,I_2 Cl_2 > I_2 > F2 I_2 > Cl_2 > F_2 Cl_2 > F_2 > I_2 I_2 > F_2 > Cl_2 F_2 > I_2 > Cl_2 F_2 > Cl_2 > I_2 H_3C-CH_3, H_3C-CH_2-CH_2-CH_2-CH_3, H_3C-CH_2-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 H_3C-CH_2-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 > H_3C-CH_3> H_3C-CH_2-CH_2-CH_2-CH_3 H_3C-CH_2-CH_2-CH_2-CH_3 > H_3C-CH_3 > H_3C-CH_2-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 H_3C-CH_2-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 > H_3C-CH_2-CH_2-CH_2-CH_3 > H_3C-CH_3 H_3C-CH_3 > H_3C-CH_2-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 > H_3C-CH_2-CH_2-CH_2-CH_3 H_3C-CH_3> H_3C-CH_2-CH_2-CH_2-CH_3 > H_3C-CH_2-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 H_3C-CH_2-CH_2-CH_2-CH_3 > H_3C-CH_2-CH_2-CH_2-CH_2-CH_2-CH_2-CH_3 > H_3C-CH_3Explanation / Answer
a] From strongest to weakest London dispersion forces in given molecules are
I2> Cl2> F2
b]
CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH3> CH3-CH2-CH2-CH2-CH3> CH3-CH3
As molecular size increases, London dispersion forces also increases
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