An element's atomic number defines it. An element with 17 protons will always be chlorine. However an element's mass numbers can vary, which means that it can have different numbers of neutrons ...
Researchers use atomic force microscopy to image the chemical structure of the small molecule ... if we have a charge transfer or if we exchange one atom or dissociate one atom,” explains ...
Newly sworn-in US President Donald Trump claimed America split the atom in his inaugural address, despite it being the achievement of New Zealander. The atom was split by Kiwi Sir Ernest Rutherford in ...