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by araneae
6062 days ago
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So, I actually submitted feedback about this on the site. Their response: "Thanks for your response to our website. Depicting the size of atoms definitely has its challenges. We've been
getting a lot of comments and feedback about this. The radius of a carbon atom is not a measure of the size of its
electron cloud, but rather the distance between the nuclei of two
adjacent atoms.
See http://www.chemguide.co.uk/atoms/properties/atradius.html
The size of the carbon atom in our activity is based on its van der
Waals radius (170 pm), not the covalent or ionic radius (around 77 pm).
See http://www.webelements.com/carbon/atom_sizes.html The sizes of the atoms in the water molecule have been adjusted to
make them consistent with other atoms depicted in the activity,
although the overall diameter of the molecule is the same. Sincerely, Sheila Avery
Genetic Science Learning Center" |
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