Why does ice melt so easily?

JO Johnsamuel asked on 29 June 2020, 00:26
1 answers / 539 views / 6 votes
BE

Iodine has an Ar of 127, so I₂ has a molecular mass of 254. Compare that to H₂O, with a molecular mass of 18. That makes the molecule of iodine about 14 times heavier than water.

Hydrogen bonds are why the water has such a high melting point. Hydrogen sulfide is heavier than water but gas at room temperature. But the mass of a molecule has a very large effect on its state.

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