A student who was asked to balance the reaction wrote the following: H2SO4(aq) + Na2OH(aq) -> Na2SO4(aq) + H3O(I) is this correct? explain why or why not using what you know about the law of conservation of mass and chemical changes. provide the correct balanced equation.

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.