Which of the following sets of quantum numbers has highest energy? n=2, l=1, m=0, s=+1/2 n=3, l=2, m=1, s=+1/2 n=3, l=1, m=0, s=+1/2 n=1, l=0, m=0, s=+1/2​

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?