O=oxygen atom, o2=oxygen molecule, o2-=oxide, o22-=peroxide, o2-=superoxide, o3=ozone.
The formula for the oxide ion is O2-, and the formula for the nitrate ion is NO3-.
The positive ion in calcium oxide is the calcium ion (Ca^2+), which has lost two electrons. The negative ion in calcium oxide is the oxide ion (O^2-), which has gained two electrons.
O2- ion is known as peroxide in English. As it is not a transition metal ion, it is not able to be written any other way. If it were a transition metal such as Lead (Pb), the Pb4+ ion can be called lead (IV) or plumbic. Lead (IV) is written in the Stock method with roman numerals representing the electrons in the ion. Plumbic is written in the Classical method with the suffixes "ic" and "ous". As some transition metals have two different ions, "ic" is added to the higher ion name while "ous" is added to the lower ion name.
The sodium ion is Na+ and the oxide ion is O2-. Therefore the ionic compound formed between the two ions has chemical formula Na2O which is sodium oxide.
An oxygen atom can only be oxidized by some element with an equal or higher electronegativity. So, oxygen can be oxidized by fluorine (e.g., OF2) or by another oxygen atom (e.g., O2).
The formula for the oxide ion is O2-, and the formula for the nitrate ion is NO3-.
The noble gas that is isoelectronic with the oxide ion O2 is neon (Ne). Both the oxide ion O2 and the neon atom have 10 electrons.
O2- is the formula for oxide ion. The negative symbol indicates the presence of anions and 2 represents the oxidation state.
Oxide ion (O2-) is isoelectronic with neon. Both species have the same number of electrons, which is 10.
The electron configuration of oxygen in the oxide ion (O2-) is 1s2 2s2 2p6 (equivalent to the configuration of a neon atom), as the oxide ion has gained two extra electrons compared to a neutral oxygen atom.
[He]2s^22p^6
O2- is the oxide ion.
The positive ion in calcium oxide is the calcium ion (Ca^2+), which has lost two electrons. The negative ion in calcium oxide is the oxide ion (O^2-), which has gained two electrons.
FeO (iron oxide . it's another name) The correct answer is Iron(III)oxide which is Fe2O3
[He]2s^22p^6
[He]2s^22p^6
O2- is an oxide ion which reacts with metal to form oxides of the metal. For example: MgO, Na2O