2007-01-05 10:01:13 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The atomic radius of a carbon atom is 70 picometres (pm). The atomic radius for of an iron atom is 140 pm.
A pm is 10^-12 meters, and therefore 10^-10 centimeters. The formula for the volume of a sphere is 4/3 pi r^3.
Calculating that out gives us a volume of 1.4 x 10^-24 cm^3 for carbon and 1.1 x 10^-23 cm^3 for iron (or 11.5 x 10^-24 cm^3 if you want to use equvalent units).
Or, to be simpler, an iron atom has twice the radius and eight times the volume.
2007-01-05 10:11:36 · answer #1 · answered by Doctor Why 7 · 1⤊ 0⤋
In centimeters?
You're crazy... its much better to show size of atoms using nanometers.
I would estimate 1 carbon and 1 iron atom are around 2 nm^3. Its definately in that range... thats about: 0.0000000002cm^3
2007-01-05 10:05:27 · answer #2 · answered by Anonymous · 0⤊ 0⤋