UNIT E: NEW ATOMIC STRUCTURE AND ELECTRON ARRANGEMENT IN ATOMS
TOPICS: / This unit is designed to give you an understanding of:· electromagnetic radiation and spectra;
· introductory quantum theory;
· methods used to represent electron configuration;
· vocabulary, concepts, and scientists related to this unit.
OBJECTIVES: / Upon completion of this unit, you will be expected to:
1. answer questions designed to evaluate your understanding and retention of the topics, concepts, and vocabulary presented in this unit;
2. describe the wave-mechanical model of the atom;
3. locate electrons in energy levels, sublevel, and orbitals according to the wave-mechanical model;
4. make orbital diagrams and write electron configurations using notation methods for any element.
FRAMEWORK STRANDS: / CHEMISTRY
LEARNING STANDARDS: / CH.2 g, i
CLASSROOM HANDOUT MATERIALS / E1: UNIT OUTLINE
B2: PERIODIC TABLE
E2: Unit E Reading Notes
E3 Unit Worksheet (4 sides)
E4: UNIT STUDY GUIDE
E5: Excerpt from “The Cartoon Guide to Chemistry”
VOCABULARY/
CONCEPTS/ SCIENTISTS / You are expected to be thoroughly familiar with the following. You will find definitions, explanations, and information about these in your reading (reference sections are noted). They will also be explained, discussed, and illustrated through classroom and lab activities.
E1-1 / Problems with Rutherford’s Model of the Atom (5.1)
E1-2 / Bohr’s Model with Electron Energy Levels--orbitals (5.1)
E1-3 / deBroglie—duality of nature (5.1, 5.3)
E1-4 / Wave frequency (5.3)
E1-5 / Wavelength (5.3)
E1-6 / Quantum of energy (5.1; worksheet section A)
E1-7 / photons and their energy (5.3, worksheet section A)
E1-8 / Schrödinger’s and Quantum Mechanical Model (5.3, unit notes)
E1-9 / ground state electron (5.3)
E1-10 / excited state electron (5.3)
E1-11 / electromagnetic radiation, electromagnetic spectrum (5.3; worksheet section A)
E1-12 / continuous spectrum (5.3)
E1-13 / bright-line (emission and absorption) spectra (5.3)
E2-1 / Heisenberg—uncertainty principle (5.3, unit notes)
E2-2 / principal quantum number (5.1; worksheet section B)
E2-3 / orbital (5.1; worksheet section C)
E2-4 / sublevels (5.1; worksheet section C)
E2-5 / angular momentum (azimuthal) quantum number, l (notes, worksheet section B)
E2-6 / s orbital (5.1; worksheet section C)
E2-7 / p orbital (5.1; worksheet section C)
E2-8 / d orbital (5.1; worksheet section C)
E2-9 / f orbital (5.1; worksheet section C)
E2-10 / shapes of s, p, and d orbitals (5.1; worksheet section C)
E2-11 / magnetic quantum number, m (notes; worksheet section B)
E2-12 / spin quantum number (notes; worksheet section B)
E2-13 / Pauli Exclusion Principle (5.2; worksheet section B)
E3-1 / orbital/ electron pair (5.2; worksheet section C)
E3-2 / Aufbau Principle determines the ground state electron configuration (5.2)
E3-3 / Hund’s Rule (5.2; worksheet section D)
E3-4 / Constructing a Diagonal Rule Chart to determine the order of fill of energy sublevels (unit reading notes; worksheet section D)
E3-5 / orbital diagrams/notation (5.2; worksheet section E)
E3-6 / electron configuration (spectroscopic) notation of a ground state atom (5.2; worksheet section E)
E3-7 / electron dot diagram (notation) (worksheet section E)
E3-8 / octet (worksheet section E)
E3-9 / valence shell (class discussion)
E3-10 / valence electrons (class discussion)
E3-11 / noble gas or kernel notation (class discussion)
E3-12 / electron configuration representing an excited state atom (class discussion)
E3-13 / electron configurations of elements of the 2nd, 3rd, 4th, 5th, 6th, and 7th periods on the periodic table
EVALUATION: / You will be evaluated via the following:
· Daily homework quizzes based on reading and written assignments
· Unit Quiz—covers all objectives stated above.
ASSIGNMENTS:
#E-1 / Reading: / 5.1 (pp. 127 thru 130-stop after bold face summary), 5.3 (pp. 138-142, page 144 thru top of page 145)Written: / · define: bright line spectrum,
· briefly summarize the theories associated with the scientists listed as E1-2, E1-3, and E1-8 on the other side of this sheet
· p. 149: #24, 41, p. 151: #76; p. 153: # 14-17
#E-2 / Reading / 5.1 (p. 130-132); 5.2 (Pauli Exclusion Principle[p. 134]), 5.3 (Heisenberg[p. 145])
Written / · briefly summarize the Heisenberg Uncertainty Principle and the Pauli Exclusion Principle
· p. 148: # #26-29; p. 151: #69
#E-3 / Reading / 5.2 (pp. 96-99)
Written / · p. 140: #30 a, b (do orbital diagrams as well), 39 a, b (do orbital diagrams as well)
· In Workbook: pp.43—49
#E-4 / Written / E3—Unit Worksheet in Outline Packet (4 sides)