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Only CO2 has two double bonds because carbon (C) has 4 positive valencies to bond

with two O (with '-2 val.') atoms , the other compounds have none because H only has a '+1 valency'.

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6y ago
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6y ago

You will find a double bond in CO2 (actually there are 2 double bonds in CO2). There are NO double bonds in HCl, H2O or NH3. The structure of CO2 looks like this...O=C=O

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Q: WhAT molecule has at least one double bond HCL CO2 H20 or NH3?
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