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Chapter 11 Exam 5
| Question | Answer |
|---|---|
| Wavelengh | The distance between two consecutive wave peaks. Longer W-Lower frequency |
| Frequency | # peaks each second m/s |
| Radiant energy spectrum | |
| Continuous Spectrum | |
| Visible Spectrum | Range of wavelengths 400-700 nm |
| Quantum Concept | Energy is present in small discrete bundles (packets)Ex. photons, electron energy levels |
| Emission Line Spectrum | |
| Atomic fingerprint | Line spectrum to identify elements |
| Energy Sublevels | s, p, d, f Same # as the number of the main level |
| Orbital | Place of space where there is a high probability of finding an atom. |
| Electron Configuration | Says the location of electrons by sublevel 1s1 means one e- in the 1s orbital |
| S block | Filling s sublevels Groups IA/1 & IIA/2 |
| D block | Filling d sublevels Groups IIIB/3 - IIB/2 |
| Valence electrons | E- in the outermost principal energy level of an atom (highest energy)\ Involved in chemical reactions |
| Atomic radius | Size of atoms Big: down & left |
| Metallic Character | Degree of metal character of an element Increases: down & left |
| Ionization Energy | Amount of energy required to remove an electron from an individual atom in the gaseous state Increases: up & Right (Opposite) |
| Photons | Particles of light |
| Electromagnetic Radiation | Energy that is transmitted from one place to antoher by light |
| Wave mechanical model | Electrons move in waves and streams of particles, just like light does |
| Principal energy levels | Discrete energy levels of an atom |
| Sublevels/ Orbital | Subdivision of the principal energy levels 1 has 1, 2 has 2, 3 has 3, 4 has 4 (like triangle upside down) |
| Pauli Exclusion Principle | an atomic orbital can hold a max of 2 e-, and those e- must have opposite spins |
| Core electrons | Inner e- that don't bond atoms |
| Representative Elements (Main Group) | Groups 1,2, 3,4,5,6,7,and 8 |