why is Br2 a liquid at STP and I2 is a solid at STP, and can you explain so I can understand?

NetherCraft 0

molecules of br2 are polar and molecules of i2 are nonpolar

molecules of i2 are polar and molecule of br2 are nonpolar

molecules of br2 have stronger intermolecular forces than molecules of i2

molecules of i2 have stronger intermolecular forces than moleculs of br2

3 Answers

  • It can’t be the third one. The roles would be reversed.

    Molecules of I2 have stronger forces than Br2. This means it is harder to melt I2 than Br2 because the bonds are harder to break. Think of a weight. Is it easier to lift a 10 lb weight or a 30 lb weight? Br would be the ten pound, which requires less energy to move (break bonds) than I (the 30 lb).

  • molecules of br2 have stronger intermolecular forces than molecules of i2

  • The answer is molecules of i2 have stronger intermolecular forces than molecules of b2.

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