# What's the size of carbon dioxide? [closed]

My question is very simple. How big is a carbon dioxide ($\mathrm{CO}_2$) molecule, i.e. the width, length and height of it?

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## closed as too localized by David Z♦Apr 7 '12 at 21:01

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Hi TWCrap, and welcome to Physics Stack Exchange! This site is not the place to ask simple reference questions. You can look up something like this on Wikipedia or in a chemistry reference book. See our meta site for more information. – David Z Apr 7 '12 at 21:05
i'm already looking, but i'm not (yet) into the world of scientist... So i hoped i could get this little bit of information from you guys, but then not..... – Mathlight Apr 7 '12 at 21:12
It's about $5\times 10^{-10}$ meters across, give or take a factor of 2. (This was not a nucleus-to-nucleus number, which I now see is 2.32 not 5 Angstroms. The answer is therefore 3 Angstroms from end to end. – Ron Maimon Apr 7 '12 at 23:41

$CO_2$ molecule
picometer is $10^{-12} m$ i.e. a decimal followed by 11 zeros. – Vineet Menon Apr 8 '12 at 6:23