hydrogen atom - definition. What is hydrogen atom
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  1. القواميس
  2. قاموس انجليزي
  3. hydrogen atom

%ما هو (من)٪ 1 - تعريف

ATOM OF ELEMENT HYDROGEN
Hydrogen Atom; Atomic hydrogen; Hydrogen atoms; Hydrogen-atom; Hydrogen wavefunction; Hydrogen nuclei; Protium atom; Deuterium atom
  • Probability densities through the ''xz''-plane for the electron at different quantum numbers (''ℓ'', across top; ''n'', down side; ''m'' = 0)

Hydrogen-like atom         
  • Complete set of <math>\psi_{nlm}</math> eigenfunctions up to ''n''&nbsp;=&nbsp;4. The solid orbitals enclose the volume above a certain probability density threshold. The colors depict the complex phase.
ATOMIC NUCLEI WITH ONE ELECTRON, SO THEY BEHAVE LIKE HYDROGEN
Hydrogenic; Hydrogenic atom; Hydrogenic atoms; Hydrogenlike atom; Hydrogenlike; Hydrogenlike atoms; Hydrogen like atom; Hydrogen-like ion; Hydrogenic orbital; Hydrogenlike element
A hydrogen-like atom (or hydrogenic atom) is any atom or ion with a single valence electron. These atoms are isoelectronic with hydrogen.
https://en.wikipedia.org/wiki/Hydrogen-like_atom
atom         
  • hydrogen-like]] atomic orbitals showing probability density and phase ('''g''' orbitals and higher are not shown)
  • These electron's energy levels (not to scale) are sufficient for ground states of atoms up to [[cadmium]] (5s<sup>2</sup> 4d<sup>10</sup>) inclusively. Do not forget that even the top of the diagram is lower than an unbound electron state.
  • 100]]) surface. The surface atoms deviate from the bulk [[crystal structure]] and arrange in columns several atoms wide with pits between them (See [[surface reconstruction]]).
  • The [[binding energy]] needed for a nucleon to escape the nucleus, for various isotopes
  • The Bohr model of the atom, with an electron making instantaneous "quantum leaps" from one orbit to another with gain or loss of energy. This model of electrons in orbits is obsolete.
  • Graphic illustrating the formation of a [[Bose–Einstein condensate]]
  • Atoms and molecules as depicted in [[John Dalton]]'s ''A New System of Chemical Philosophy'' vol. 1 (1808)
  • An example of absorption lines in a spectrum
  • The [[Geiger–Marsden experiment]]:<br /> ''Left:'' Expected results: alpha particles passing through the plum pudding model of the atom with negligible deflection.<br /> ''Right:'' Observed results: a small portion of the particles were deflected by the concentrated positive charge of the nucleus.
  • 2}}</sub>) of various isotopes with Z protons and N neutrons.
  • Periodic table showing the origin of each element. Elements from carbon up to sulfur may be made in small stars by the [[alpha process]]. Elements beyond iron are made in large stars with slow neutron capture ([[s-process]]). Elements heavier than iron may be made in neutron star mergers or supernovae after the [[r-process]].
  • A potential well, showing, according to [[classical mechanics]], the minimum energy ''V''(''x'') needed to reach each position ''x''. Classically, a particle with energy ''E'' is constrained to a range of positions between ''x''<sub>1</sub> and ''x''<sub>2</sub>.
  • Illustration of a nuclear fusion process that forms a deuterium nucleus, consisting of a proton and a neutron, from two protons. A [[positron]] (e<sup>+</sup>)—an [[antimatter]] electron—is emitted along with an electron [[neutrino]].
SMALLEST UNIT OF A CHEMICAL ELEMENT
Atoms; Atomic chemical; Atom and Atomic Theory; Atomic structure; Polyelectronic atoms; Bound-bound; Bound-bound transition; Structure of the atom; Multielectron atom; Ancient atom; Chemical atom; Chemical Atom; Number of atoms on Earth; Polyelectronic; Monoelectronic; Atomic system
(atoms)
An atom is the smallest amount of a substance that can take part in a chemical reaction.
N-COUNT
Atom         
  • hydrogen-like]] atomic orbitals showing probability density and phase ('''g''' orbitals and higher are not shown)
  • These electron's energy levels (not to scale) are sufficient for ground states of atoms up to [[cadmium]] (5s<sup>2</sup> 4d<sup>10</sup>) inclusively. Do not forget that even the top of the diagram is lower than an unbound electron state.
  • 100]]) surface. The surface atoms deviate from the bulk [[crystal structure]] and arrange in columns several atoms wide with pits between them (See [[surface reconstruction]]).
  • The [[binding energy]] needed for a nucleon to escape the nucleus, for various isotopes
  • The Bohr model of the atom, with an electron making instantaneous "quantum leaps" from one orbit to another with gain or loss of energy. This model of electrons in orbits is obsolete.
  • Graphic illustrating the formation of a [[Bose–Einstein condensate]]
  • Atoms and molecules as depicted in [[John Dalton]]'s ''A New System of Chemical Philosophy'' vol. 1 (1808)
  • An example of absorption lines in a spectrum
  • The [[Geiger–Marsden experiment]]:<br /> ''Left:'' Expected results: alpha particles passing through the plum pudding model of the atom with negligible deflection.<br /> ''Right:'' Observed results: a small portion of the particles were deflected by the concentrated positive charge of the nucleus.
  • 2}}</sub>) of various isotopes with Z protons and N neutrons.
  • Periodic table showing the origin of each element. Elements from carbon up to sulfur may be made in small stars by the [[alpha process]]. Elements beyond iron are made in large stars with slow neutron capture ([[s-process]]). Elements heavier than iron may be made in neutron star mergers or supernovae after the [[r-process]].
  • A potential well, showing, according to [[classical mechanics]], the minimum energy ''V''(''x'') needed to reach each position ''x''. Classically, a particle with energy ''E'' is constrained to a range of positions between ''x''<sub>1</sub> and ''x''<sub>2</sub>.
  • Illustration of a nuclear fusion process that forms a deuterium nucleus, consisting of a proton and a neutron, from two protons. A [[positron]] (e<sup>+</sup>)—an [[antimatter]] electron—is emitted along with an electron [[neutrino]].
SMALLEST UNIT OF A CHEMICAL ELEMENT
Atoms; Atomic chemical; Atom and Atomic Theory; Atomic structure; Polyelectronic atoms; Bound-bound; Bound-bound transition; Structure of the atom; Multielectron atom; Ancient atom; Chemical atom; Chemical Atom; Number of atoms on Earth; Polyelectronic; Monoelectronic; Atomic system
·vt To reduce to atoms.
II. Atom ·noun An ultimate indivisible particle of matter.
III. Atom ·noun Anything extremely small; a particle; a whit.
IV. Atom ·noun An ultimate particle of matter not necessarily indivisible; a molecule.
V. Atom ·noun A constituent particle of matter, or a molecule supposed to be made up of subordinate particles.
VI. Atom ·noun The smallest particle of matter that can enter into combination; one of the elementary constituents of a molecule.

ويكيبيديا

Hydrogen atom

A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe.

In everyday life on Earth, isolated hydrogen atoms (called "atomic hydrogen") are extremely rare. Instead, a hydrogen atom tends to combine with other atoms in compounds, or with another hydrogen atom to form ordinary (diatomic) hydrogen gas, H2. "Atomic hydrogen" and "hydrogen atom" in ordinary English use have overlapping, yet distinct, meanings. For example, a water molecule contains two hydrogen atoms, but does not contain atomic hydrogen (which would refer to isolated hydrogen atoms).

Atomic spectroscopy shows that there is a discrete infinite set of states in which a hydrogen (or any) atom can exist, contrary to the predictions of classical physics. Attempts to develop a theoretical understanding of the states of the hydrogen atom have been important to the history of quantum mechanics, since all other atoms can be roughly understood by knowing in detail about this simplest atomic structure.

https://en.wikipedia.org/wiki/Hydrogen atom
أمثلة من مجموعة نصية لـ٪ 1
1. The nucleus of a heavy hydrogen atom contains a proton and a neutron.
2. What is chemistry if not an "unguided process" of molecular interactions without "purpose"? Or are we to teach children that God is behind every hydrogen atom in electrolysis?
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