Examlex
Consider the elliptical orbit of a comet around the Sun. Where in its orbit is the comet moving the fastest?
Amu
Atomic Mass Unit, a unit of mass used to express atomic and molecular weights, equivalent to one twelfth of the mass of a carbon-12 atom.
Valence Shells
The outermost shell of electrons in an atom, which determines how the atom interacts chemically with other atoms.
Electrical Charge
A physical property of matter that causes it to experience a force when placed in an electromagnetic field, typically measured in coulombs.
Neutrons
Subatomic particles found in the nucleus of an atom, having no electric charge and a mass slightly greater than that of protons.
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