An atom of an unknown element can gain 3 electrons to reach a full octet.
How many valence electrons does an atom of this element have?

C) electrons encircling a nucleus with neutrons and protons

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.

The answer is nitrogen-containing bases