Atomic Weight

  • (noun): (chemistry) the ratio of the atomic mass of an element to half the atomic mass of carbon-12.
    Synonyms: relative atomic mass

Some articles on atomic weight, atomic, atomic weights, weight:

Antonius Van Den Broek - Major Contribution To Science
... nucleus was large, on the order of about half of the atomic weight of the atom, in whole number units of hydrogen mass ... basis made the tentative suggestion that atomic nuclei are composed of numbers of helium nuclei, each with a charge corresponding to half of its atomic weight ... This would make the nuclear charge nearly equal to atomic number in smaller atoms, with some deviation from this rule for the largest atoms, such as gold ...
Chemical Element - Description - Atomic Mass and Atomic Weight
... number of an element, A, is the number of nucleons (protons and neutrons) in the atomic nucleus ... a super-index on the left hand side of the atomic symbol (e.g ... neutrons and protons and is thus a natural (or whole) number, the atomic mass of a single isotope is a real number ...
Molar Mass Constant
... constant, symbol Mu, is a physical constant which relates atomic weight and molar mass ... phrases such as The molar mass of an element is the atomic weight in grams per mole ... However atomic weight is a dimensionless quantity, and cannot take the units of grams per mole ...
Moseley's Law - History
... in 1911 had postulated that Z for gold atoms might be about half of its atomic weight, and only shortly afterward, Antonius van den Broek had made the bold suggestion ... of atoms in the periodic table did tend to be according to atomic weights, but there were a few famous "reversed" cases where the periodic table demanded that an element with a higher atomic weight (s ... emission spectra of cobalt and nickel would follow their ordering by weight, or by their periodic table position (atomic number, Z), and Bohr said it would certainly be by Z ...

Famous quotes containing the words weight and/or atomic:

    It will be seen that we contemplate a time when man’s will shall be law to the physical world, and he shall no longer be deterred by such abstractions as time and space, height and depth, weight and hardness, but shall indeed be the lord of creation.
    Henry David Thoreau (1817–1862)

    The totality of our so-called knowledge or beliefs, from the most casual matters of geography and history to the profoundest laws of atomic physics or even of pure mathematics and logic, is a man-made fabric which impinges on experience only along the edges. Or, to change the figure, total science is like a field of force whose boundary conditions are experience.
    Willard Van Orman Quine (b. 1908)