atomic number


  • WordNet 3.6
    • n atomic number the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element
    • ***


In literature:

For this it was necessary to suppose that the atoms were not all alike, but belonged to a large number of different classes.
"The Story of Evolution" by Joseph McCabe
I cannot easily persuade myself that Epicurus, Plato, and Pytagoras, have given us their atom, idea and numbers, for current pay.
"The Essays of Montaigne, Complete" by Michel de Montaigne
Atomic number judged of from electrochemical equivalent, 851.
"Experimental Researches in Electricity, Volume 1" by Michael Faraday
The numbers 18, 290 and 261 are the numbers of the ultimate physical atoms found to exist in a chemical atom.
"Occult Chemistry" by Annie Besant and Charles W. Leadbeater
Notice next the number of atoms in each element as indicated by the little low figures on the right of each letter.
"Creative Chemistry" by Edwin E. Slosson
The number of atoms present remains unchanged.
"Scientific American Supplement, No. 365, December 30, 1882" by Various
The first number would be the atomic number.
"Omnilingual" by H. Beam Piper
Once a party, on their return, told me that one of their number had disappeared, blown to atoms by a shell.
"The Great War As I Saw It" by Frederick George Scott
There appears to be a definite amount of matter in the visible universe, a definite number of molecules and atoms.
"The Machinery of the Universe" by Amos Emerson Dolbear
Let's call that number its atomic number.
"Letters of a Radio-Engineer to His Son" by John Mills

In news:

The company uses a number of methods for the manufacture of alloys , the composition of which can be specified in atomic or weight percent, depending on specific customer requirements.
World's most powerful X-ray laser kicks record number of electrons out of an atom.
Intel's Atom chips will power the next-generation in-vehicle infotainment system (IVI) used by Nissan in a number of the car maker's 2013 production vehicles, Intel said Thursday.
In 1990, Haroche theorized a way to measure the number of photons in a cavity by observing their interactions with atoms.
All fullerenes incorporate exactly 12 pentagonal rings of carbon atoms, with some number of hexagonal rings filling in the rest of the structure.
"So the radioactivity for a constant number of U atoms depends on the proportion of different isotopes in the sample.".
Saturated fats (or triglycerides) contain the maximum number of hydrogen atoms attached to their carbon atoms.
Uranium ( ) is a silvery-white metallic chemical element in the actinide series of the periodic table, with atomic number 92.

In science:

Useful near-IR lines, accessible from ground, are the Hydrogen Brγ 2.166µ, HeI2.058µ, H2 , but also higher atomic number species, [FeII] among others.
High-Redshift Galaxies: The Far-Infrared and Sub-Millimeter View
While scattering crucially depends on the atomic number, slowing down is only moderately dependent. The primary ionizations are then projected onto the sense plane.
An efficient photoelectric X-ray Polarimeter for the study of Black Holes and Neutron Stars
Dalal [Dal88] has considered one such distance: the distance between two propositional worlds is the number of atomic propositions on which they differ, i.e., the Hamming distance between worlds considered as binary kdimensional vectors, where k is the number of atomic propositional variables. A.
Distance Semantics for Belief Revision
D is the term of the absorption due to [Compton] scattering, Z is the atomic number, and K is a coefficient, which exhibits some discontinuities at the edge of the series.
On the Theory of Collisions between Atoms and Electrically Charged Particles
If n represents the number of atoms per unit volume, the particle passes, during path 1, within a distance of b to b + db from 2πnbdb atoms.
On the Theory of Collisions between Atoms and Electrically Charged Particles