ion 音标拼音: ['ɑɪən] ['ɑɪ
, ɑn]
n . 离子
离子
ion 离子
ion 离子
ion n 1 :
a particle that is electrically charged (
positive or negative );
an atom or molecule or group that has lost or gained one or more electrons -
ion \-
ion \ (?;
106 ). [
L . -
io ,
acc . -
ionem :
cf .
F . -
ion .]
A noun suffix denoting act ,
process ,
result of an act or a process ,
thing acted upon ,
state ,
or condition ;
as ,
revolution ,
the act or process of revolving ;
construction ,
the act or process of constructing ;
a thing constructed ;
dominion ,
territory ruled over ;
subjection ,
state of being subject ;
dejection ;
abstraction .
[
1913 Webster ]
Ion \
I "
on \ ([
imac ]"[
o ^]
n ),
n . [
Gr . '
io `
n ,
neut ,
of '
iw `
n ,
p .
pr .
of '
ie `
nai to go .]
1 . (
Elec .
Chem .)
an atom or goup of atoms (
radical )
carrying an electrical charge .
It is contrasted with neutral atoms or molecules ,
and free radicals .
Certain compounds ,
such as sodium chloride ,
are composed of complementary ions in the solid (
crystalline )
as well as in solution .
Others ,
notably acids such as hydrogen chloride ,
may occur as neutral molecules in the pure liquid or gas forms ,
and ionize almost completely in dilute aqueous solutions .
In solutions (
as in water )
ions are frequently bound non -
covalently with the molecules of solvent ,
and in that case are said to be solvated .
According to the electrolytic dissociation theory ,
the molecules of electrolytes are divided into ions by water and other solvents .
An ion consists of one or more atoms and carries one unit charges of electricity ,
3 .
4 x 10 ^{-
10 }
electrostatic units ,
or a multiple of this .
Those which are positively electrified (
hydrogen and the metals )
are called {
cations };
negative ions (
hydroxyl and acidic atoms or groups )
are called {
anions }.
Note :
Thus ,
hydrochloric acid ({
HCl })
dissociates ,
in aqueous solution ,
into the hydrogen ion , {
H },
and the chlorine ion , {
Cl -};
ferric nitrate , {
Fe (
NO3 )
3 },
yields the ferric ion , {
Fe },
and nitrate ions , {
NO3 -}, {
NO3 -},
{
NO3 -}.
When a solution containing ions is made part of an electric circuit ,
the cations move toward the cathode ,
the anions toward the anode .
This movement is called migration ,
and the velocity of it differs for different kinds of ions .
If the electromotive force is sufficient ,
electrolysis ensues :
cations give up their charge at the cathode and separate in metallic form or decompose water ,
forming hydrogen and alkali ;
similarly ,
at the anode the element of the anion separates ,
or the metal of the anode is dissolved ,
or decomposition occurs .
Aluminum and chlorine are elements prepared predominantly by such electrolysis ,
and depends on dissolving compounds in a solvent where the element forms ions .
Electrolysis is also used in refining other metals ,
such as copper and silver .
Cf .
{
Anion }, {
Cation }.
[
Webster 1913 Suppl .]
2 .
One of the small electrified particles into which the molecules of a gas are broken up under the action of the electric current ,
of ultraviolet and certain other rays ,
and of high temperatures .
To the properties and behavior of ions the phenomena of the electric discharge through rarefied gases and many other important effects are ascribed .
At low pressures the negative ions appear to be electrons ;
the positive ions ,
atoms minus an electron .
At ordinary pressures each ion seems to include also a number of attached molecules .
Ions may be formed in a gas in various ways .
[
Webster 1913 Suppl .]
67 Moby Thesaurus words for "
ion ":
acid ,
acidity ,
agent ,
alkali ,
alkalinity ,
alloisomer ,
anion ,
antacid ,
atom ,
atomic model ,
base ,
biochemical ,
cation ,
chemical ,
chemical element ,
chromoisomer ,
compound ,
copolymer ,
dimer ,
electrocoating ,
electroetching ,
electrogalvanization ,
electrogilding ,
electrograving ,
electrolysis ,
electrolyte ,
electron ,
electroplating ,
element ,
galvanization ,
heavy chemicals ,
high polymer ,
homopolymer ,
hydracid ,
inorganic chemical ,
ionization ,
ionogen ,
isomer ,
macromolecule ,
meson ,
metamer ,
molecule ,
monad ,
monomer ,
neutralizer ,
nonacid ,
nonelectrolyte ,
nuclear atom ,
nuclear particle ,
nuclide ,
organic chemical ,
oxyacid ,
planetary shell ,
polymer ,
proton ,
pseudoisomer ,
quark ,
radical ,
reagent ,
shell ,
subshell ,
sulfacid ,
tagged atom ,
tracer ,
tracer atom ,
trimer ,
valence shell
安装中文字典英文字典查询工具!
中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料:
ION ION is the destination for your favorite binge-worthy dramas! Anchored by a collection of critically acclaimed shows to keep you entertained all day long
FIND WHERE TO WATCH ION - ION Television ION is the destination for your favorite binge-worthy dramas! Anchored by a collection of critically acclaimed shows to keep you entertained all day long
Scripps Networks - ION - Stations ION is the destination for your favorite binge-worthy dramas! Anchored by a collection of critically acclaimed shows to keep you entertained all day long
Support - ION Television Learn More About the Stations That Carry ION Modified on Tue, 23 May, 2023 at 3:04 PM
Sorry, this page isnt available - ION Television ION is a top 5-rated entertainment network with a catalog of proven procedural series Anchored by a collection of television's most-watched dramas, including NCIS, FBI, and Chicago Fire, ION's schedule caters to its loyal binge-watching audience nationwide
HelpDesk: Holiday Schedule Availability : ION Television The normal working days for the Digital HelpDesk support staff are: Monday-Friday 8:30am - 5:00pm EST The Digital HelpDesk is generally not staffed during major National and some Ohio State holidays, although queued tickets may be periodically addressed by staff members during such periods