Which statement is true of the following reaction?

upper h subscript 2 plus upper o subscript 2 right arrow upper 2 h superscript plus, plus upper o superscript 2 minus.
it is balanced for charge and for number of atoms.
it is not balanced for charge or for number of atoms.
it is not balanced for charge but is balanced for number of atoms.
it is balanced for charge but is not balanced for number of atoms.