why is SO2 gaseous but SeO2 solid?

Asked by Inet 11th March 2016, 2:33 PM

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Answer:

Hi,

SO₂ is a gas whereas SeO₂ is solid. This is because SeO₂ has a chain polymeric structure consisting of alternate selenium and oxygen atoms. This one dimensional chain forms strong interactions thus it exists as solid. Whereas SO₂ is molecular and no such strong interactions is present between them. It forms discrete units. Thus it exists as gas.

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Answered by Expert 11th March 2016, 6:00 PM

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