3 ms·
But the covalent radius is not the crucial property here, the silicone lattice spacing is, and that's 0.5nm so a 2nm wide element is 4 atoms across.
by Certhas 7y ago
But the covalent radius is not the crucial property here, the silicone lattice spacing is, and that's 0.5nm so a 2nm wide element is 4 atoms across.
- Certhas 7y agoCorrection: The lattice spacing gives the size of the fundamental building block of the lattice, which includes several atoms. The nearest neighbour distance in the lattice is 0.235 nm. Wikipedia has a nice picture of the lattice structure: https://en.wikipedia.org/wiki/Diamond_cubic#/media/File:Visualisation_diamond_cubic.svg https://en.wikipedia.org/wiki/Diamond_cubic#/media/File:Visu... Part 3 of the picture is a 3x3x3 block of elementary cells, for silicon this would be 1.63nm along each edge, so for a 2nm element you get a few more atoms in each direction.
- kragen 7y agoThank you both for the correction!