#Jmol chemistry lab software
One of the most common software molecule visualization software packages in use today is called Jmol. They can assign distinct colors to every element if they choose. Computers are not limited by the available colors. Today, computers can generate visualizations of molecules with ease. Oxygen is found in blood, blood is red so oxygen atoms are colored red. Nitrogen is found in the sky, and the sky is blue, therefore nitrogen atoms are blue. Sulfur is yellow, carbon is black, chlorine gas is green, iodine gas is purple.
These colors are typically colors associated with some property of the elements. There is no set in stone standard for CPK color schemes, but nearly all molecule kits use the same common CPK colors. Halogens – green – starting light green for fluorine and getting darker as you move down the group
Walter Koltun applied for a patent for a molecule set in 1962 to extend the color list to more elements. This color scheme covers the atoms in a great majority of basic organic chemistry molecules, but obviously not all of them. In 1952, Robert Corey and Linus Pauling used a basic color code with their models. The CPK part comes from the initials of the scientists who first used the colors to match the elements. There is a convention matching the color to the elements known as CPK colors. The choice of color for each atom is not arbitrary. These kits come with several different colors to easily distinguish one element from another. Chemistry departments often have kits of plastic balls to stick together to represent atoms and their arrangement in molecules. This entry was posted on Augby Todd Helmenstine (updated on May 2, 2021)
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