What are the cations and anions for v2(co3)3

Explanation:

Cations are the species that hold a positive charge by losing electrons.

For example, , , etc are all cations.

Whereas anions are the species that hold a negative charge by gaining electrons.

For example, , , are all anions.

Therefore, in the compound , vanadium () is the cation and carbonate () is the anion.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-