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 ...

Heavy water is a form of water with a unique atomic structure and properties ... molecule of heavy water contains two hydrogen atoms and one oxygen atom. The difference, though, lies in the ...

Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined the atom as a "plum pudding." That is ...

Elements are arranged in the periodic table in order of increasing atomic number. For example hydrogen has the atomic ... the electron arrangement 2,8,1. An atom of sodium has 11 electrons.

An element's atomic number defines it ... There are three isotopes of hydrogen: hydrogen, deuterium (hydrogen-2) and tritium (hydrogen-3): Carbon has three isotopes: \(_{6}^{ ...

Researchers use atomic force microscopy to image the chemical structure of the small molecule ... the bonds between atoms and even the carbon-hydrogen bonds. But they also performed density ...