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The boiling points of fluorine, chlorine, bromine and iodine are 85 K, 238 K, 331 K and 456 K, respectively. The increase in boiling points from F2 to I2 is due to _____.
(a) increasing molecular mass
(b) increasing electrostatic force of attraction
(c) increasing van der Waals’ force of attraction
(d) increasing atomic number
Identify the correct answer