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why is H2O liquid and H2S a gas?

sea water contains chlorides, bromides and Iodides of Na,K,Mg and Ca but is mainly sodium chloride solution (2.5% by mass). Certain forms of marine life contain iodine in their systems; various seaweeds, for example, contain upto 0.5% of iodine.

hope you got it.........

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 sorry it,s the answer of your another question. I think you will not mind my best friend.... 

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 due to small size and high electronegativity of oxygen,molecules of water are associated through hydrogen bonding,resulting in its liquid state.On the other hand H2S molecules are not associated through H-bonding.hence it is a gas.

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oxygen has ability to form pπ-pπ multiple bond which is much stronger than pπ-dπ or dπ-dπ made by sulphur and oxygen can form hydrogen bond also

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  Water is able to form hydrogen bonding, which are the strongest intermolecular force. Because hydrogen bonds are strong, the molecules will have a higher melting point so H2O is liquid at room temp. whereas H2S has no hydrogen bonding resulting in a lower melting point and therefore a gas at room temp.    
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H2O is liquid because it forms pΠ-pΠ bond
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