BMB 207 Lecture Notes - Lecture 7: Chlorine, Fluorine, Ion

• School: University of Maine
• Department: Micro and Molecular Biology
• Course: BMB 207
• Professor: Robert Cashon

Document Summary

Model of atomic structure proposed by j. j. thompson presuming that an atom is essentially a unorganized bundle of nucleus, electrons, etc. An experiment in which particles were shot at a piece of hammered gold foil. Disputed the plum pudding theory and developed a new theory of the atom"s" structure. The (+) alpha particle were forced off at a range of angles as the particles graze the (+) nucleus of the gold foil. Niels bohr"s atomic structure theory in which the nucleus is located interiorly with electrons circling the nucleus in orbits. The smallest possible piece of an element and are the basic building blocks of all matter. The mass of atoms are so minimal that special units of mass are used to describe them. All atoms contain at least one proton and one electron and most have neutrons. The protons and neutrons make up the nucleus and the electrons occupy the space around.