Everyone at that time imagined the atom as a "plum pudding ... number in their outer shells are less stable than those with "full" outer shells. Elements that have the same number of electrons ...

IN a letter to NATURE of November 25 last Dr. Norman Campbell discusses the problem of the possible consistency of the assumptions about the motion and arrangement of electrons in the atom ...

But James Watson and Francis Crick's claim was a valid one, for they had in fact discovered the structure of DNA, the chemical that encodes instructions for building and replicating almost all ...