Atomic Nucleus Wikipedia

Atomic - Wikipedia.

Atomic may refer to: . Of or relating to the atom, the smallest particle of a chemical element that retains its chemical properties; Atomic physics, the study of the atom; Atomic Age, also known as the "Atomic Era"; Atomic scale, distances comparable to the dimensions of an atom; Atom (order theory), in mathematics Atomic (cocktail), a champagne cocktail Atomic, an Australian ....

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Atomic mass - Wikipedia.

The atomic mass (m a or m) is the mass of an atom.Although the SI unit of mass is the kilogram (symbol: kg), atomic mass is often expressed in the non-SI unit dalton (symbol: Da) - equivalently, unified atomic mass unit (u). 1 Da is defined as 1 / 12 of the mass of a free carbon-12 atom at rest in its ground state. The protons and neutrons of the nucleus account for nearly all of the total ....

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Relative atomic mass - Simple English Wikipedia, the free ….

A relative atomic mass (also called atomic weight; symbol: A r) is a measure of how heavy atoms are. It is the ratio of the average mass per atom of an element from a given sample to 1/12 the mass of a carbon-12 atom. In other words, a relative atomic mass tells you the number of times an average atom of an element from a given sample is heavier than one-twelfth of an atom of ....

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