Atomic number - Wikipedia, the free encyclopedia
In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom and therefore identical to the charge number ...
List of elements by atomic number - Wikipedia, the free encyclopedia
A table of chemical elements ordered by atomic number and color coded according to type of element. Given is each element's name, element symbol, group and period, Chemical series ...
atomic number - definition of atomic number by the Free Online ...
atomic number. n. Symbol Z Abbr. at. no. The number of protons in an atomic nucleus. atomic number. n (Physics / General Physics) the number of protons in the nucleus of an atom of ...
atomic number — Infoplease.com
More on atomic number from Infoplease: atomic number: meaning and definitions - atomic number: Definition and Pronunciation; periodic law: Introduction of Atomic Numbers ...
Atom number - Hutchinson encyclopedia article about Atom number
atomic number. Number of protons in the nucleus of an atom. It is equal to the positive charge on the nucleus. In a neutral atom, it is also equal to the number of electrons ...
Atomic Number
Atomic Number In the modern periodic table, the elements are actually arranged in order of increasing atomic number--that's the number of protons in one atom of a particular ...
Atomic numbers - definition of Atomic numbers in the Medical ...
number /num·ber/ (num´ber) a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count. atomic number (Z) a number expressive of the ...
WebElements Periodic Table of the Elements | Periodicity | List of ...
Essential data: name, symbol, atomic number, and atomic weight; block, period, group number, and group name in periodic table; description; standard state; registry number ...
Atomic Structure
The atomic number describes the number of protons in an atom. For hydrogen the atomic number, Z, is equal to 1. For helium Z = 2. Since the number of protons equals the number ...
Glossary Item - Atomic Number
A glossary of scientific terms. ... Return to the Glossary Index Page | Atomic Number. The atomic number is equal to the number of protons in an atom's nucleus.