In each of the following groups of substances, pick the one that has the given property. Justify your answer.
a. Highest boiling point: HBr, Kr, or Cl2
b. Highest freezing point: H2O, NaCl, or HF
c. Lowest vapor pressure at 25oC: Cl2, Br2, or I2
d. Lowest freezing point: N2, CO, or CO2
e. Lowest boiling point: CH4, CH3CH3, or CH3CH2CH3
f. Highest boiling point: HF, HCl, or HBr
g. Lowest vapor pressure at 25oC: CH3CH2CH3,

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СН,ССН,