LESSON PLAN

Unit Education: High School Subjects: CHEMISTRY Class / Semester: X / 1 Principal material: Atomic Structure and Periodic TableSubpokok Material: Electron Configuration Allocation of Time: 2 X 45 minutes

A. CORE COMPETENCEKI 1 : Living with and practice the teachings of their religionKI 2 : Living the honest behavior and practice , discipline , responsibility , caring( mutual assistance , cooperation , tolerance , peace ) , polite , responsive and pro - active and displayed as part of the solution to various problems in interacting effectively with the social and natural environment as well as the place itself as a reflection of the nation in the association world .KI 3 : Understanding , applying , analyzing factual knowledge , conceptual , procedural based ingintahunya sense about science , technology , arts , culture , and humanities with an insight into humanity , national , state , and civilization -related causes of phenomena and events , as well as implementing the procedural knowledge specific field of study according to their talents and interests to solve the problem .KI 4 : Processing , reasoning , and presenting in the realm of the concrete and abstract domains associated with the development of the self- learned at school , and were able to use the method according to the rules of science.

B. BASIC COMPETENCE

1.1 Recognizing the regularity of the particle structure of matter as the greatness of Almighty God and the knowledge of the structure of matter particles as a result of human creative thinking that truth is tentative .2.2 Demonstrate scientific behavior ( curious , disciplined , honest , objective , open , able to distinguish fact and opinion , tenacious , conscientious , responsible , critical , creative , innovative , democratic , communicative ) in designing and conducting experiments and discussions are realized in everyday behaviors .2.3 Demonstrate cooperative behavior , polite , tolerant , peace-loving and caring environment and saving in the use of natural resources .2.4 Demonstrate behaviors responsive , and proactive as well as wise as a manifestation of the ability to solve problems and make decisions .3.4 Analyze the relationship of electron configuration and orbital diagram to determine the position of the elements in the periodic table and periodic properties of the elements .4.4 Presenting the results of the analysis of the relationship of electron configuration and orbital diagram to determine the position of the elements in the periodic table and periodic properties of the elements .

C. INDICATORS

Indicate acceptance , respect and implement honesty, rigor , discipline and responsibility . Using the Aufbau principle , Hund's rule and Pauli principle prohibition to write electron configurations and orbital diagrams . Write down the electron configuration of an atom / ion if known atomic number or vice versa . Determine the position of an element in the periodic table based configuration and quantum numbers

D. LEARNING OBJECTIVES

1 . AffectiveStudents can demonstrate acceptance , respect and implement honesty, rigor , discipline and responsibility .2 . Cognitive- Students can use the Aufbau principle , Hund's rule and Pauli principle prohibition to write electron configurations and orbital diagrams .- Students can write the electron configuration of an atom / ion if known atomic number or vice versa .- Students can determine the position of an element in the periodic table based elekrton configuration .- Students can determine the position of an element in the periodic table based on quantum numbers .

E. TEACHING MATERIALS The electron configuration and orbital diagram Group and period

F. METHOD OF LEARNING Approach: Scientific Model: Cooperative Methods: Team Games Tournament (TGT)

G. EQUIPMENT / TOOLS & RESOURCES LEARNING a. Learning Resources Book a package LKS Internet b. Learning media - Presentation power point - Card Problem - Laptop and LCD

c. Learning materials - Problem games - Problem evaluation

H. STEPS LEARNING

Stages Activity Time

Initial Activity1. Teachers say hello to the students.2. Teachers check student attendance3 minutes

Apperception

1. Teachers review the previous lesson on quantum numbers "How many quantum numbers and what does it do?"2. Students answer the teacher's questions. "There are 4 kinds. The principal quantum number (n) states the main skin. Azimuthal quantum number (l) states subkulitnya. Magnetic quantum number (m) subshell orientation expressed in the skin. Spin quantum number (s) or the direction of its rotation spin states .3 minutes

Orientation0. The teacher tells the material to be learned today. "In this meeting, we will learn about electron kofigurasi and location of an element in the periodic system" 0. Delivering indicators and learning objectives. 0. Tells applying TGT method. 7 minutes

MotivationThe teacher tells the benefits of studying the electron configuration. "After learning expected of you can explain the rules in writing electron configurations, write the electron configuration of an element, and write the electron configuration of an element through an electron diagram. This material will be useful for you as a provision for the matter further. "2 minutes

Core Activities

EksplorationSTEP 1 "Teaching" Delivering the material in general about writing the electron configuration using the Aufbau principle, Hund's rule and Pauli principle prohibition and the relationship between the electron configuration of an element with its place in the periodic system of elements.15 minutes

ElaborationDividing students in heterogeneous groups (4-5 members per group)

STEP 2 "Learning Teams" Teachers provide worksheets, worksheets and students work in teams to master the material.

STEP 3 "Tournament" Students play a game in the academic ability of homogeneous participants are representative of each group.

45 minutes

a. Konfirmasi1. Teachers give awards to the winning team. 2. Teachers concluded learning about the material being studied today.5minutes

Activity End1. Teachers provide evaluation 1. Teacher Giving homework. 1. Ending the lesson by giving greetings10 minutes

I. ASSESSMENT OF LEARNING

1. Scores Results Team Games Tournament Multiple awards are given based on the average score of the group. Group awards are given according the following criteria.Criteria (an average team) AwardsAppreciation

404550good teamThe team is very goodsuper teams

2. Cognitive Assessment Test results of learning (mastery of concepts) chemistry, using the scoring. Each question was given a score of 1 if the correct answer and a score of zero if the answer is wrong.

3. Affective assessment

Assessment attitude (behavior) using behavioral assessment rubric.NoNamePenilaian Jumlah Skor

123

1.

2.

3.

4.

5.

6.

dst.

Description: 1 = if the two aspects are met 2 = if 3 aspects are met 3 = if all aspects are met

Aspects of assessment: 1. honest 2. thorough 3. discipline 4. responsibility

Knowing,Pekanbaru, ..... February 2014

Principal

(__________________)Chemistry Teacher

(__________________)

Student Worksheet

Name : Class :Group :

INDICATORS

Indicate acceptance , respect and implement honesty, rigor , discipline and responsibility . Using the Aufbau principle , Hund's rule and Pauli principle prohibition to write electron configurations and orbital diagrams . Write down the electron configuration of an atom / ion if known atomic number or vice versa . Determine the position of an element in the periodic table based configuration and quantum numbers

LEARNING OBJECTIVES

1 . AffectiveStudents can demonstrate acceptance , respect and implement honesty, rigor , discipline and responsibility .

2 . Cognitive- Students can use the Aufbau principle , Hund's rule and Pauli principle prohibition to write electron configurations and orbital diagrams .- Students can write the electron configuration of an atom / ion if known atomic number or vice versa .- Students can determine the position of an element in the periodic table based elekrton configuration .- Students can determine the position of an element in the periodic table based on quantum numbers .

TEACHING GUIDE Read the material that has been presented Answer the questions on the worksheet

TEACHING MATERIALSA. Filling OrbitalElectron orbitals by following the rules by considering three things , namely the Aufbau principle , the Pauli principle of prohibition , and the principle Hund .

1 . Aufbau principleAccording to the Aufbau principle , under normal conditions or at a basic level , the electrons will occupy the lowest energy orbitals first and forwarded to the orbital has a higher energy .

The order of the energy of the lowest to highest are as follows :example :1H : 1s12He : 1s27N : 1s2 2s2 2p3

2 . Prohibition Pauli principlePauli suggested the hypothesis which states that in a two- electron atom may not have the same four quantum numbers . In other words , each orbital can only contain a maximum of two electrons with opposite spin direction .For example , the electrons in the 1s orbital filling :Maximum number of electrons for each subshell is equal to two times the number of orbitals .For suborbital : s maximum of 2 electrons Maximum 6 p electrons a maximum of 10 electrons d a maximum of 14 electrons f

3 . Principle HundFrederick Hund , 1927 ( known as Hund ) says that the filling of electrons in the orbital level ( equal energy ) in an orbital is one by one with the same spin direction before pairing .

B. Electron Configuration DeviationIrregularities in the d subshell orbitals are half-filled orbitals due to ( d5 ) or full ( d10 ) is more stable compared to the nearly half- filled orbitals ( d4 ) or nearly full ( d8 or d9 ) . Thus , if the outermost electron ends on d4 , d8 or d9 , then one or all of the electrons in s orbitals ( which are at a lower energy level than d ) move to the d subshell orbitals .See some examples in Table .

In the f orbitals , as the deviation in d orbital configuration , the electron configuration ending in f orbitals are also experiencing irregularities . Irregularities in the electrons in the orbital filling is caused by the orbital energy levels almost equal to each other . This deviation in the form of migration of one or two electrons from the f orbitals to the d orbitals . See some examples in Table .

C. Relations with the Electron Configuration Periodic SystemThe electron configuration is closely related to the periodic system of elements . The value of n ( principal quantum number ) pointed to a number of the largest element of the period in the periodic system of elements. To determine the class of the elements in the periodic system based on electron configuration , needs to be seen in the type and number of outer electrons that occupy the same skin .1 . Main group ( Group A ) , in this group of valence electrons occupy the s subshell or subshell s and p .2 . Transition groups ( Group B ) , in this group of valence electrons occupy the s and d subshell .3 . Lanthanides and actinides to , the valence electrons occupy the s and f subshell . But the numbers do not specify the group , lanthanides and actinides as having no class .

PROBLEM SOLVED

1 . Complete point -tick below !The electrons in an atom are trying to occupy the subshell - subshell .......... , then go to a higher energy level . Thus , the atomic energy levels are at .......... This is called ..........To express the distribution of electrons in the orbitals in a subshell , electron configuration can be written in the form of ........ An orbital denoted by strip , while the two electrons occupy one ..... ......... denoted with opposite direction . If an orbital contains only one electron , the arrows are written leads ......In 1928 , Wolfgang Pauli ( 1900-1958 ) argued that no two electrons in an atom may have the same ..... . Two electrons have the principal quantum number , ..... , and in the same magnetic orbitals , must have ...... different . Both of these electron pairs .

2 . Determine the number of orbitals occupied by pairs of electrons if the ground state , the last electron of an atom is n = 4 , l = 1 , m = +1 , s = -1 / 2 !

3 The element X has a mass number of 48. If the atom X there are 26 neutrons, the electron configuration is appropriate for X atom is ...

4. Last electrons in the atoms of element A has a quantum number n = 5 , l = 1 , m = +1 , s = +1 / 2 , then the elements in the periodic system A is in group .. and period ........ in the periodic system of elements.

JAWABAN SOAL LATIHAN

1. The electrons in an atom are trying to occupy the subshell subshell low-energy , and then to a higher energy level . Thus , the atomic energy levels are at a minimum . This is called the Aufbau principle .To express the distribution of electrons in the orbitals in a subshell , electron configuration can be written in the form of orbital diagram . An orbital denoted by strip , while the two electrons occupy the orbital denoted by two arrows in opposite directions. If an orbital contains only one electron , the arrows pointing upward written .In 1928 , Wolfgang Pauli ( 1900-1958 ) argued that no two electrons in an atom may have the same four quantum numbers . Two electrons have the principal quantum number , azimuthal , and magnetic in the same orbital must have different spin . Both of these electron pairs.

2. In the ground state, the last electron of an atom is n = 4, l = 1, m = +1, s = -1 / 2. The number of orbitals occupied by an electron pair is ... Completion :4p61s2 2s2 2p6 3s2 3p6 4s2 3d10 4p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p61s2 2s2 2p6

3. The element X has a mass number of 48. If the atom X there are 26 neutrons, the electron configuration is appropriate for X atom is ...Completion : Ar X = 48Atomic number X = 48- 26 =2222X = [Ar] 4s2 3d2

4. Last electrons in the atoms of element A has a quantum number n = 5, l = 1, m = +1, s = +1/2 ; then the elements in the periodic system A is in group ... Explanation: Elements A : n = 5; l = 1; m = +1; s = +1 / 2 So the electron configuration ends in 5p3. Groups can be determined by writing the electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p3. Element of A is in group VA (Nitrogen group) and Period 5.

GAMES

QUESTIONANSWER

1The electrons in an atom-subshell trying to occupy low-energy subshell, then go to a higher energy level

AUFBAUPRINCIPLE

2electron orbitals within a subshell tend to unpaired. New pairs of electrons in a subshell if it is no longer empty orbitals.Hund's rule

3no two electrons in an atom may have the same four quantum numbers ..Pauli ban

SOALJAWABAN4 Write the electron configuration of elements 35Br!1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5

5A divalent metal is reacted with excess hydrochloric acid and produce a salt that has a relative molecular mass of 208. If the core of the metal atom has 81 neutrons then the metal in the periodic system teletak on ...Group II A, Period 6

6

Situated on how elements of the Group and Period 25Mn?Group VII B period 4

EVALUATION

Name : Class :Group:

1. Y an element with atomic number 33 has a number of orbital ...1. 61. 81. 12 1. 181. 32

1. Here is charging d subshell electrons in the appropriate orbitals according to Hund's rule, except. . . .A.

B.

C.

D.E.

1. Known electron configuration element Y as follows: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 5s1Then the Y element in the periodic system lies in ...1. Group II A, period 41. Group II B, period 41. Group II A, period 51. Group I B, period 51. Group I A, period 5

1. A2- ion-electron configuration is1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d6In the periodic table, element of A lies in ...1. Group VIII B, period 41. Group VIII B, period 51. Group VI B, period 41. Group VI B, period 51. Group IV B, period 5

1. Last electrons in the atoms of element A has a quantum number n = 5, l = 1, m = +1, s = +1 / 2; then the elements in the periodic system A is in group ...A. The noble gases B. Halogen C. Oxygen D. Nitrogen E. Carbon

ANSWERS TO EVALUATION

0. Y an element with atomic number 33 has a number of orbital ...

32Y= 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3

2. Here is charging d subshell electrons in the appropriate orbitals according to Hund's rule, except. . . . completion: Hund's Rule "in a subshell consisting of multiple orbitals, electrons fill the orbitals will be occupied by each electron spin same direction (half full), then the electrons form pairs of electrons (full)".

3. Known electron configuration element Y as follows: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 5s1Then the Y element in the periodic system lies in ...Y = 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10 5s1Thus, the Y element is in group IB and Round 5.

4. A2- ion-electron configuration is1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d6In the periodic table, element of A lies in ...

A2- = 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d6That means that A has received 2 electrons, so the electron configuration for the element of A be 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d4A configuration of elements, it can be determined that the elements in the periodic system A is in group VI B, Round 5.

5. Last electrons in the atoms of element A has a quantum number n = 5, l = 1, m = +1, s = +1 / 2; then the elements in the periodic system A is in group ...

Unsure A : n=5 ; l =1 ; m=+1 ; s = +1/2So the electron configuration ends in 5p3. Groups can be determined by writing the electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p3. Element of A is in group VA (Nitrogen group).