Question: Elements that give electrons and can oxidize what what property about them?
About the article "Chemical reaction", section "Oxidation and reduction".

Candidate passages:
Substances that have the ability to oxidize other substances (cause them to lose electrons) are said to be oxidative or oxidizing and are known as oxidizing agents, oxidants, or oxidizers.
That is, the oxidant (oxidizing agent) removes electrons from another substance, and is thus itself reduced.
And, because it "accepts" electrons, the oxidizing agent is also called an electron acceptor, hence the name.
Oxygen is the quintessential oxidizer.
Oxidants are usually chemical substances with elements in high oxidation states (e.g., , , , , ), or else highly electronegative elements (O2, F2, Cl2, Br2) that can gain extra electrons by oxidizing another substance. 
Perhaps the simplest definition of electronegativity is that of Leland C. Allen, who has proposed that it is related to the average energy of the valence electrons in a free atom, formula_9 where εs,p are the one-electron energies of s- and p-electrons in the free atom and "n"s,p are the number of s- and p-electrons in the valence shell.
It is usual to apply a scaling factor, 1.75×10−3 for energies expressed in kilojoules per mole or 0.169 for energies measured in electronvolts, to give values that are numerically similar to Pauling electronegativities.
The one-electron energies can be determined directly from spectroscopic data, and so electronegativities calculated by this method are sometimes referred to as spectroscopic electronegativities.
The necessary data are available for almost all elements, and this method allows the estimation of electronegativities for elements that cannot be treated by the other methods, e.g.
francium, which has an Allen electronegativity of 0.67.
However, it is not clear what should be considered to be valence electrons for the d- and f-block elements, which leads to an ambiguity for their electronegativities calculated by the Allen method.
In this scale neon has the highest electronegativity of all elements, followed by fluorine, helium, and oxygen. 
The Ramsey–Lewis method is a method for defining terms found in theoretical frameworks (such as in scientific theories), credited to Frank P. Ramsey and David Lewis.
By using this method, a set of theoretical terms appearing in a theory can be defined implicitly by the assertions of the theory itself.
A scientific theory which attempts to describe "electrons" is inherently abstract, as no one has ever observed an electron directly.
Thus, the origin and content of the concept of "electron" is questionable.
What does the word exactly signify?
Ramsey and Lewis proposed that the meaning of the term "electron" is implicitly generated by the scientific theory that describes it, via all its assertions about electrons.
Electrons are those things about which all the statements of the theory are true.
However, some of those statements in a theory refer to other unobserved entities and properties such as "charge" or "spin".
For instance, "Electrons attract protons" and "Electrons have negative charge" employ the terms "protons" and "negative charge" (with the latter also implicitly using the concept of "charge").
These properties are formalized, statements (such as conditionals) are formed using them, and those statements taken together are the definiens of the term.
Consider a sentence such as "There's an electron in the sink."
This means something along the lines of: "There exist some properties "P"1, "P"2, ..., "P""n" ( one for every theoretical property involved in the scientific theory, with 'electronhood' (which roughly corresponds to the essence of an electron included as "P"1) such that... (a statement in the scientific theory, but with "P"1, ..., "P""n" substituted for the specific terms such as 'charge', 'is an electron', etc.
employed by the theory), and there is something in the sink that has "P"1.
"The process of converting the narrative form of a scientific theory into second-order logic is commonly called "Ramsification" (sometimes also spelled "Ramseyfication").
Example: Suppose there are only three principles in our scientific theory about electrons (those principles can be seen to be statements involving the properties):A1.
Electrons (things that have P1) have charge (P2).A2.
Things with charge (P2) tickle you.A3.
Electrons (things that have P1) cause lightning.
Furthermore, we include the property of "electronhood", as outlined above, to be designated by "P"1, and the property of "charge" to be designated by "P"2.
Then the meaning of a sentence such as "I have an electron in my pocket" is Ramsified into:"There are properties "P"1 and "P"2 such that (things with "P"1 also have "P"2, and things with "P"2 tickle you, and things with "P"1 cause lightning, and there is a thing with "P"1 in my pocket)."
(, who cites .)
A solid oxide fuel cell is made up of four layers, three of which are ceramics (hence the name).
A single cell consisting of these four layers stacked together is typically only a few millimeters thick.
Hundreds of these cells are then connected in series to form what most people refer to as an "SOFC stack".
The ceramics used in SOFCs do not become electrically and ionically active until they reach very high temperature and as a consequence the stacks have to run at temperatures ranging from 500 to 1,000 °C.
Reduction of oxygen into oxygen ions occurs at the cathode.
These ions can then diffuse through the solid oxide electrolyte to the anode where they can electrochemically oxidize the fuel.
In this reaction, a water byproduct is given off as well as two electrons.
These electrons then flow through an external circuit where they can do work.
The cycle then repeats as those electrons enter the cathode material again. 
In physics, a charge carrier is a particle free to move, carrying an electric charge, especially the particles that carry electric charges in electrical conductors.
Examples are electrons, ions and holes.
In a conducting medium, an electric field can exert force on these free particles, causing a net motion of the particles through the medium; this is what constitutes an electric current.
In different conducting media, different particles serve to carry charge:  In metals, the charge carriers are electrons.
One or two of the outer valence electrons from each atom is able to move about freely within the crystal structure of the metal.
The free electrons are referred to as conduction electrons, and the cloud of free electrons is called a Fermi gas.
In electrolytes, such as salt water, the charge carriers are ions, atoms or molecules that have gained or lost electrons so they are electrically charged.
Atoms that have gained electrons so they are negatively charged are called anions, atoms that have lost electrons so they are positively charged are called cations.
Cations and anions of the dissociated liquid also serve as charge carriers in melted ionic solids (see e.g.
the Hall–Héroult process for an example of electrolysis of a melted ionic solid.)
Proton conductors are electrolytic conductors employing positive hydrogen ions as carriers.
In a plasma, an electrically charged gas which is found in electric arcs through air, neon signs, and the sun and stars, the electrons and cations of ionized gas act as charge carriers.
It carries external electrons which are found in certain ionic lattices such as copper.
In a vacuum, free electrons can act as charge carriers.
These are sometimes called cathode rays.
In a vacuum tube, the mobile electron cloud is generated by a heated metal cathode, by a process called thermionic emission.
In semiconductors (the material used to make electronic components like transistors and integrated circuits), in addition to electrons, the travelling vacancies in the valence-band electron population (called "holes"), act as mobile positive charges and are treated as charge carriers.
Electrons and holes are the charge carriers in semiconductors.
It can be seen that in some conductors, such as ionic solutions and plasmas, there are both positive and negative charge carriers, so an electric current in them consists of the two polarities of carrier moving in opposite directions.
In other conductors, such as metals, there are only charge carriers of one polarity, so an electric current in them just consists of charge carriers moving in one direction.