Modern atom
Order by
28 terms
Terms | Definitions |
|---|---|
 atom | smallest part of an element |
| electron | has a negative charge and a mass of 9.11 x 10-31 kg |
| electron | revolves around the nucleus in fixed orbits |
| electron shells | are named alphabetically starting with k-shell to q-shell |
| proton | has a positive charge and a mass of 1.673 x 10-27 kg |
| proton | is located in the nucleus with neutrons |
| neutron | no charge and a mass of 1.675 x 10-27 kg |
| nucleus | center of atom |
| nucleons | particles in the nucleus |
| nucleons | protons + neutrons |
| nuclide | atom having specific number of protons and neutrons |
| nuclide | separated into four groups depending on subatomic particle configuration |
| isobars | two or more nuclides; same mass number; different atomic numbers; belong to different elements |
| isotones | two or more nuclides; different atomic numbers; same number of neutrons; belong to different elements |
| isomers | two or more nuclides; same atomic number; same mass number; different value of energy content; belong to same element |
| isomers | exists in pairs; are radioactive; only difference is the nuclear energy content |
| isotopes | two or more nuclides; sam atomic number; different mass number; belong to same elements |
| isotopes | human body cannot distinguish between one or another of the same element |
| bohr atom | considered a miniature solar system |
| bohr atom | small, dense, positively charged nucleus surrounded by negatively charged electrons revolving in fixed orbits around the nucleus |
| atomic number | number of protons in an atom |
| atomic number | represented by letter "Z" and determines identity of element |
| atomic mass number | represent by letter "A" and equal to number of nucleons in atom |
| atomic mass number | weight of combined protons and neutrons in nucleus |
| atomic weight | 1/12 the mass of a carbon 12 nucleus |
| atomic mass number = atomic number + neutron | A = Z + N |
| electron binding energy | strength of attachment of an electron to the nucleus |
| electron binding energy | strongest at the K-shell with the designation of Eb |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.