Answer:
It is balanced for charge but is not balanced for number of atoms.
Step-by-step explanation:
In the reactants you have :
2H and 2O
in the products you have:
2H and 1O
Then it is not balanced for the number of atoms.
Looking at the charge now:
H2 and O2 have charge 0
H+ has positive 1
O-2 has negative 2
2 H+ + O-2 is neutral because you have 2 positive 1 and 1 negative 2
Then it is balanced for charge