For the vaporization reaction Br2(l) Br2(g), H0 = 31.0 kJ/mol and S0 = 93.0 J/(mol·K).
At what temperatures is this process spontaneous?

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric

What do you mean by that? like the contents? the thc level?

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.