Atoms and Molecules

Properties of Atoms and Electrons in Atoms

What is the atomic radius of an atom?

The atomic radius of an atom is defined as half of the distance between two atoms of the same element held together in a chemical bond. Not surprisingly, these are very small distances! For hydrogen, the smallest atom, the atomic radius is 0.37 Ångströms, or 3.7 × 10−11 meters.


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