Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(1/27)*6.022*10^(23)*0.143*10^(-9)*2
(1/27)*6.022*10^(23)*0.143*10^(-9)*2
Natural Language
Math Input
Extended Keyboard
