| A | B |
|---|
| electron configuration | the arrangement of electrons in the energy levels, sublevels and orbitals of atoms |
| electron cloud | a region around the nucleus of an atom where electrons are likely to be found (most probable location) |
| sublevels | regions within the energy levels; corresponds to the block grouping s,p,d,f on the Periodic Table |
| orbitals | regions within electron cloud where electrons orbit the nucleus; number of orbitals differs with sublevel type (s,p,d,f) |
| s orbitals | spherical orbitals; first to fill for any energy level; can only hold 2 electrons |
| Nitrogen | name the element 1s²2s²2p³ |
| valence electrons | an electron in the highest occupied energy level of an atom;available to be lost, gained, or shared in the formation of chemical compounds |
| Silicon | name the element 1s²2s²2p⁶3s²3p² |
| Bohr diagram | diagram representing the electronic structure of an element, that comprises electrons in a series of concentric circles; planetary model |
| electron cloud | a region around the nucleus of an atom where electrons are likely to be found |
| energy level | A particular region where electrons can orbit a nucleus |
| number of valence electrons | adding the number of s and p electrons since the most recent noble gas |
| period/series | a horizontal row in the Periodic Table |
| octet structure | An outer electron shell resembling the noble gas configuration of eight electrons |
| coefficient (number written in front) | write this first when writing the electron configuration this coordinates with the row #, energy shell/level# possible numbers are rows 1-7 |
| Electron configuration | Arrangement of electrons in the orbitals of an atom. |
| Excited state | State the electron goes to when it has gained energy |
| Family/Group | An identifier used to describe the column of the standard periodic table. |
| valence electrons | an electron in the highest occupied energy level of an atom;available to be lost, gained, or shared in the formation of chemical compounds |
| Transition metals | What is the name of the D block elements? |
| electron dot structure | a notation that depicts valence electrons as dots around the atomic symbol of the element; the symbol represents the inner electrons and atomic nucleus |
| sublevels | regions within the energy levels; (l); corresponds to the block grouping s,p,d,f on the Periodic Table |
| Electron dot structure | Consists of the elements symbol which represents the atomic nucleus and inner level electrons surrounded by dots representing the atoms valence electrons |
| 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p… | Order of Electron configuration according to Aufbau Principle |
| Aufbau Principle | dictates that electrons will occupy the orbitals having lower energies before occupying higher energy orbitals. |
