The elements that will commonly form -2 anions are the chalcogens in group 16, otherwise known as the oxygen family. These elements are oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and radioactive polonium (Po).
Carbonate does NOT appear in the Periodic Table, because it is not an elementy, but an 'ANION'. The carbonate anion has the formula of 'CO3^(2-)'. That is the anion consists of one carbon and three oxygen atoms. Both Carbion and Oxygen are elements and appear in the Periodiuc Table.
An anion is a negative ion, i.e. one which is attracted to the anode during electrolysis. It's a particle, so it can't contain a liquid.
An ion.If the atom loses electrons it becomes a positive ion, a cation.If the atom gains electrons it becomes a negative ion, an anion.
Well the difference will be in the type of bond formed as a result. The bond would be Ionic in case of polarized anion and Covalent in case or unpolarised anion.The related link below also talks about the size of the anion and charge density in determining the bond type.
Chloride would be a negative ion in sodium chloride dissolved in water.
Selenium is an non-metal element that can exist in various oxidation states, including as a cation (Se^2+) or an anion (Se^2-, Se^4-, etc.). The oxidation state of selenium determines whether it acts as a cation or anion in a given compound.
Br is an anion. It is called bromide and is the ion form of the element bromine.
generally, non-metals
generally, non-metals
Iron forms a cation.
O-2 is an anion.
Iodine forms the iodide ion. It has a charge of negative 1 (-1)
The anion in sulphates is the SO42-.
The formula of lithium oxide is Li2O. In this compound, lithium typically forms a +1 cation and oxygen forms a -2 anion.
The element with 10 electrons in its neutral state is neon (atomic number 10). When it forms an anion with a 2- charge, it gains 2 electrons to have a total of 12 electrons, taking on the electron configuration of the noble gas, argon.
Chromate is an divalent anion with formula CrO4-2
The ionic compound of BeOH2 is beryllium hydroxide. Beryllium forms the cation Be2+ and hydroxide ion forms the anion OH-. This results in the compound Be(OH)2.