What is the oxygen atom cation anion

Cations are formed ...

Atoms with 1 to 4 outer electrons tend to give up electrons. These are mostly metals that want to reach the noble gas state. This creates positively charged ions. Such ions are called cations.

Anions are formed ...

Atoms with 5 to 7 outer electrons can absorb electrons. This creates negatively charged ions. Such ions are called anions.


Question:

What is an ion anyway ???


An ion is a tiny particle whose number of electrons on the outermost electron shell (outer shell) is increased or decreased compared to the atomic state.



Example for cation:
In its atomic state, sodium has 1 AU (outer electron)
If sodium releases this external electron in order to achieve the particularly desired noble gas state, the ATOM becomes an ION.



Example for an anion:
In its atomic state, chlorine has 7 AU (outer electrons)
If chlorine takes on another external electron in order to achieve the particularly desired noble gas state of the subsequent noble gas, the ATOM becomes an ION.






If lithium emits an electron it has the same number of electrons as helium.
They say: "By releasing an electron, lithium reaches the noble gas state of helium".

If magnesium emits two electrons it has the same number of electrons as neon.
They say: "By releasing 2 electrons, beryllium achieves the noble gas state of neon".

If gallium emits three electrons it has the same number of electrons as argon.
They say: "Gallium achieves the noble gas state of argon by releasing 3 electrons".

All right ???
It is best to choose other atoms of the 1st - 3rd main group and formulate similar sentences.





Exercise 1)

Element nameAtom with outer electronNumber of electrons released ...Number of recorded
Electrons ..
the ion created by the uptake or release of electronsthe noble gas corresponding to the ion
aluminumAl   
 S.  S.2-
Calcium  -Approx2+
 Be   
 K1  
 F.  F.-
neonNo    
oxygen    
 Cl  Cl-
nitrogen   




-> solution



A few more exercises ...

Exercise 2)
Complete the following equations. Please note that an ionic compound contains the same number of positive and negative charges.


+ 3 Cl-->   AlCl3 __ Al3++ __ O2--> _______
__ Ba2++ __ F--> _______ __ Cu2++ __ F--> _______
__ Be2++ __ O2--> _______  __ Li++ __ Cl--> _______



-> solution




Exercise 3)

->Approx2++ 2 cl-BaO->______+   _______
Al2O3->______+ _______Al2S.3->______+   _______
MgS->______+ _______K2S.->______+   _______



-> solution



Ready for a little test ???





Solution part:



Solution, exercise 1):

Element nameAtom with outer electronNumber of electrons released ...Number of recorded
Electrons ..
the ion created by the uptake or release of electronsthe noble gas corresponding to the ion
aluminumAl3-Al3+
sulfurS.-2S.2-
CalciumApprox2-Approx2+
berylliumBe2-Be2+
potassiumK1-K+
fluorineF.-1F.-
neonNo00-neon
oxygenO-2O2-
chlorineCl-1Cl-
nitrogenN-N3-



Solution (exercise 2):

+ 3 Cl-->   AlCl3  2 al3++ 3 O2--> Al2O3
1 Ba2++ 2 F--> BaF2  1 Cu2++ 2 F--> CuF2
1 Be2++ O2--> BeO  1 li++ 1 cl--> LiF



Solution (exercise 3) :

->Approx2++ 2 cl-BaO->Ba2++ O2-
Al2O3->2 al3++ 3 O2-Al2S.3->2 al3++ 3 p2-
MgS->Mg2++ S2-K2S.->2 K++ S2-


-> The Bohr model of the atom -> The periodic table of the elements -> Formulas of salts
-> Energetic consideration of the decisive reaction steps for the production of a salt