October 30 November 3. Daily Log
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1 October 30 November 3 Daily Log
2 October 30 th Bellwork In general there is a decrease in atomic radii as you move from left to right across a period. This trend, is caused by the increasing positive charge in the nucleus and the fact that the principal energy level within a period remains the same. Each successive element has 1 addition proton and electron. What is the trend in atomic radii across a period?
3 October 30, 2017 Today s focus: 1. Ionization Energy- Look at Graphs and look at first few questions for the graphing activity, finish and turn in, then: 2. Complete the following using your book: On page 167, #85 write out e.config and orbital diagram for each.(e.c. is the 1s 2 2s 2 and the orbital is the arrows. 3. On page 168, #90 write the electron dot structure. E. dot is dots representing valence electrons N,S,E,W then pair the electrons.
4 October 31 Bellwork Atoms can gain or lose electrons to form ions. Because electrons are negatively charged, atoms that gain or lose electrons acquire a net charge. An ion is an atom or bonded group of atoms that has a positive or negative charge. When atoms lose electrons they always become smaller. Why do atoms that become ions become smaller in size?
5 Homework/Book Assignment p 167, Write the elements orbital notation(arrows with boxes) and the complete electron configuration for: a. beryllium c. nitrogen b. aluminum d. sodium
6 Electron Dot for page Draw the ELECTRON dot structure(lewis dots) for: a. carbon b. arsenic c. polonium d. potassium e. barium
7 Review: Electron Configuration Which element has the electron configuration 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 8?
8 What is the long hand of Germanium Write out the entire electron configuration for Germanium
9 1. How do you write the shorthand configuration for an element?
10 For Example: Germanium is on the row below Argon so put the symbol for Argon in brackets then finish the electron configuration for the row Ge is on.
11 3 RULES you MUST be able to identify Aufbau Principle electrons will fill LOWEST ENERGY level first Pauli Exclusion Principle electrons will have opposite spins if they are in the same orbital Hunds Rule electrons must fill one at a time first at equal orbital levels then they can pair
12 Orbital diagrams- Examples You make a box or line or circle to represent the (ORBEDTAL) arrows = electrons Remember only 2 total electrons per orbital Hunds rule says only one electron per orbital Until all the orbitals with the same energy have At least one and then you pair them up. Look at Carbon below for example. Arrows go Up first in all the same type of orbital and then Pair up with arrow down. (opposite spin) Only 1 s orbital in an energy level 3 p orbitals possible in energy level 5 d orbitals possible in energy level 7 f orbitals possible in energy level
13 Orbital Diagram of Iron
14 POP Quiz : Atoms and Electrons 6. CHOICES are: Aufbau, Pauli, Hunds?
15 Lewis Dot Review Only draw the VALENCE ELECTRONS What is a proper dot structure for Fluorine? Is this one the ONLY proper way?
16 October 31 Today s focus: Review Chapter 6 Periodic Table- 1. Practice Electron Configuration, Orbital Diagrams and Lewis Dot Structures 2. Review Aufbau, Hunds, Pauli 3. Receive a review sheet for the test(for a grade) NO food or drink, No phones, No talking please unless it is about the review information
17 November 1 Bellwork Atoms gain or lose electrons to attain the Noble gas configuration because noble gases have full outside energy levels. The octet rule states that atoms tend to gain, lose or share electrons in order to acquire a full set of 8 valence electrons. If there is a full set of 8 electrons then both the s and p block are full. Helium is the exception, it is full at the s block. What is the goal of the octet rule?
18 November 1 Today s Focus: Play Kahoot then complete the Test Review using FIB notes and all other handouts and notes.
19 November 2 Bellwork NONE Teacher Absent
20 November 2 CHAPTER 6 TEST Periodic TABLE
21 November 3 Bellwork When an writing the electron configuration for an element the number in front of the letter represents the energy level or ring around the nucleus of an atom. The letter, (s,p,d or f) represents the orbital. The exponent represents the number of electrons in the orbital. S sublevel can only have one orbital, p can only have 3 orbitals, d can have 5 orbitals and f can have 7 orbitals. If each orbital (orbedital) can only hold 2 electrons, How many electrons maximum can s hold, p hold, d hold, f hold?
22 November 3 Today s Focus Introduction to Ionic Bonding- Read Sections 7.1 and 7.2 and fill in your notes
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