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Transcript
Modern Atomic Theory Concept Review Explain the relationship between orbitals and energy levels. •? Modern Atomic Theory Concept Review Explain the relationship between orbitals and energy levels. •Electrons are most likely found in regions called orbitals Modern Atomic Theory Concept Review •Electrons with different amounts of energy exist in different energy levels Modern Atomic Theory Concept Review •Number of energy levels filled depends on number of electrons Modern Atomic Theory Concept Review Bohr Modern Atomic Theory ? ? Modern Atomic Theory Concept Review Bohr Modern Atomic Theory Electrons orbit nucleus Planet Like Location Known Electrons orbit nucleus Wave Like Location cannot be determined Modern Atomic Theory Concept Review Explain why electrons move from level to level. •? Modern Atomic Theory Concept Review Explain why electrons move from level to level. •Electrons jump between energy levels when an atom gains or loses energy. Modern Atomic Theory Concept Review Explain why electrons move from level to level. •? Modern Atomic Theory Concept Review Explain why electrons move from level to level. •The atom gains energy by absorbing a particle of light called a photon. Modern Atomic Theory Concept Review Explain why electrons move from level to level. •? Modern Atomic Theory Concept Review Explain why electrons move from level to level. •Electrons jump between energy levels when an atom gains or loses energy. Modern Atomic Theory Concept Review4. Identify the maximum number of electrons that each energy level can hold Maximum Number of Electrons A B C Level 1 Level 2 Level 3 Modern Atomic Theory Concept Review4. Identify the maximum number of electrons that each energy level can hold Maximum Number of Electrons A B C Level 1 Level 2 Level 3 Modern Atomic Theory Concept Review Orbital Type Shape A Sphere # of E 2 B Dumbell 2 C Varies 2 D Varies 2 Fills Group 2 Group 18 Group 12 Element 71 Modern Atomic Theory Concept Review Orbital Type Shape A Sphere # of E 2 B Dumbell 2 C Varies 2 D Varies 2 Fills Group 2 Group 18 Group 12 Element 71 Modern Atomic Theory Word Definition Derivation Orbital A region in an atom 1932 where there is a high Robert Mullikan probability of Bohr finding electrons Nagoaka Latin Wheel Track course circuit Word Definition Derivation Photon A unit or quantum of 1926 "unit of light, a particle of electromagn EMR that has zero etic rest mass and carries radiation," a quantum of from photoGreek = energy. "light" + on "unit." Word Definition Derivation Valence An electron that 1919, Irving Electrons is found in the Langmuir outermost shell of 1852 Edward an atom and that Frankland determines the 1789, William Higgins elements "ultimate" chemical particles, properties Section Review An atom’s valence electrons are in the second energy level. Which two orbitals could it be in? •? Section Review An atom’s valence electrons are in the second energy level. Which two orbitals could it be in? •S or P Modern Atomic Theory Section Review How are energy levels related to orbitals? •? •? Modern Atomic Theory Section Review How are energy levels related to orbitals? •Energy levels •Contain orbitals Modern Atomic Theory Section Review Describe the number of electrons in each level for N? •? Modern Atomic Theory Section Review Describe the number of electrons in each level for N? •The Energy level contains 2 electrons st 1 Modern Atomic Theory Section Review •? Modern Atomic Theory Section Review •The Energy level contains the other 5 electrons nd 2 Section Review How many valence electrons does Nitrogen a member of group 15 have? •? •? Section Review How many valence electrons does Nitrogen a member of group 15 have? •7: 5 valence in the second level st •2 in the 1 Modern Atomic Theory Section Review What can scientists not know about an electron? •? •? •? Modern Atomic Theory Section Review What can scientists not know about an electron? •Exact Location •Direction •Speed Modern Atomic Theory Section Review In which energy levels are the electrons for Aluminum(Group 13) •? •? •? Modern Atomic Theory Section Review In which energy levels are the electrons for Aluminum(Group 13) •2 In the nd •8 in the 2 rd •3 in the 3 st 1 Modern Atomic Theory Section Review How many valence for Aluminum (Element 13 Group 13)? •? •? •? Modern Atomic Theory Section Review How many valence for Aluminum (Element 13 Group 13)? •2 In the nd •8 in the 2 rd •3 in the 3 st 1 Modern Atomic Theory Section Review •Valence Number •? ? • Modern Atomic Theory Section Review •Valence Number rd •3 in the 3 (Group 13) •