Which two elements have the same number of valence electrons? a.) na and sr b.)zr and h c.)o and s d.)mg and p

Oxygen and sulfur because they are in the same group on the periodic table

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.