"അണുസംഖ്യ" എന്ന താളിന്റെ പതിപ്പുകൾ തമ്മിലുള്ള വ്യത്യാസം

{{prettyurl|Atomic number}}

{{Use dmy dates|date=June 2013}}

[[File:Atomic number depiction.jpg|thumb|Atomic Number Depiction|300px|right|An explanation of the superscripts and subscripts seen in atomic number notation. Atomic number is the number of protons, and therefore also the total positive charge, in the atomic nucleus.]]

[[Image:Bohr-atom-PAR.svg|thumb|right|300px|The '''Rutherford–Bohr model''' of the [[hydrogen atom]] ({{nowrap|''Z'' {{=}} 1}}) or a hydrogen-like ion ({{nowrap|''Z'' > 1}}). In this model it is an essential feature that the photon energy (or frequency) of the electromagnetic radiation emitted (shown) when an electron jumps from one orbital to another, be proportional to the mathematical square of atomic charge ({{nowrap|''Z²''}}). Experimental measurement by [[Henry Moseley]] of this radiation for many elements (from {{nowrap|''Z'' {{=}} 13 to 92}}) showed the results as predicted by Bohr. Both the concept of atomic number and the Bohr model were thereby given scientific credence.]]