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LEARNING ACTIVITY SHEET GRADE LEVEL GRADE 11 STEM

QUARTER / DOMAIN 2nd QUARTER/Electronic Structure of Atoms

Name : _____________________________

WEEK & DAY NO. WEEK 1 DAY 1

LC CODE STEM_GC11ESIIa-b-54

Strand & Section: ___________________

TOPIC: Quantum Numbers LEARNING COMPETENCY: Use quantum numbers to describe the electron in an atom. Activity No. 1

Quantum Numbers I. OBJECTIVES 1. Determine the number of electrons in an atom using quantum numbers. 2. Create a story line and comic strip of the roles of quantum numbers to describe electron in an atom. II. LESSON OVERVIEW Since that the Bohr Model of the atom has limitations of explaining the spectra emitted by other atoms when quantized and a problem with describing the electrons location, scientists formulated new and innovative explanations of how electrons are arranged in atoms that lead to the development of the quantum mechanical model of an atom and the quantum numbers. III. A.MATERIALS Pen and paper, coloring pens, laptop B. REFERENCES Commission on Higher Education in collaboration with Philippine Normal University (2016). Teaching Guide for Senior High School General Chemistry 1, Commission on Higher Education K to 12 Transition Program Management Unit Office, 4th Floor, Commission on Higher Education, C.P. Garcia Ave., Diliman, Quezon City Agapin, Julienne Stephanie Fabie. Laboratory Manual for General Chemistry 1. Retrieved from https://lrmds.deped.gov.ph/detail/13708 on June 18, 2020

IV. PROCEDURE 1. Study the table below. Quantum Number Principal Angular Momentum Magnetic Spin

Symbol Values n 1,2, ... ℓ 0,1, ..., n-1 mℓ ms

–ℓ,..0..,+ℓ +1/2, -1/2

Specifies main energy level sub-level orbitals in the subshell spin state

2. Make a table of a set of quantum numbers for the 4 th main energy level.

V. ANALYSIS Q1. What does the first three quantum numbers indicate? ________________________________________________________________________ ________________________________________________________________________ Q2. What does the fourth quantum number indicate? ________________________________________________________________________ ________________________________________________________________________

Q3. Explain why the 3rd main energy level can hold a maximum number of 18 electrons? ________________________________________________________________________ ________________________________________________________________________ Q4. How does the size of a given type of orbital vary with n? ________________________________________________________________________ ________________________________________________________________________ Q4. How do the quantum numbers help describe the electron in an atom? ________________________________________________________________________ ________________________________________________________________________

VI. GENERALIZATION Explain the use of quantum numbers in describing the electron in an atom. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ VII. APPLICATION Explain how advances in our understanding of the atom influence our daily lives. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________

VIII. ENRICHMENT ACTIVITY 1. Justify your answer if the following set of quantum numbers is valid or not. a. n = 2, l = 2, ml = 0, and ms = -1/2 b. n = 2, l = 1, ml = -1, and ms = -1/2 c. n = 3, l = 0, ml = 0, and ms = 1 d. n = 3, l = 2, ml = 3, and ms = ½

2. What is the maximum electron pairs that can occupy an: a. s orbital _______________________________ b. the subshell of p orbitals _______________________________ c. the subshell of d orbitals _______________________________ d. the subshell of f orbitals _______________________________ e. the subshell of g orbitals _______________________________ 3. Do as directed. a. Sketch the shape of the orbital with the quantum numbers n=3, l=0 and mℓ = 0 b. The sketch of the shape of the subshell with the quantum numbers n=4, l=2 is c. The highest orbital possible in n = 4 d. Sketch the orientation of the allowed values of l= 1 for the shell n=2. e. Write the set of quantum numbers for the following i. It is an up-spin 4d electron with an orbital orientation of 0. ii. The electron is in the 3rd energy level, px-orbital, and down spin. iii. When n=2, l is 1, mℓ = 1, ms = ½ f. What is the value of l for a 4f electron? g. What is the orbital designation for an electron in the 3rd shell and p sublevel? h. How many electrons have the following quantum numbers: n =4, l =2, mℓ = -2?

Prepared by: ALBERT M. RAMOS MT II, Zaragoza NHS-SHS Checked by: ROSEMARIE Z. BURAYAG EPS I, Science

LEARNING ACTIVITY SHEET GRADE LEVEL GRADE 11 STEM

QUARTER / DOMAIN 2nd QUARTER/Electronic Structure of Atoms

Name : ____________________________

WEEK & DAY NO. WEEK 2 DAY2-3

LC CODE STEM_GC11ESIIa-b-57

Strand & Section: ___________________

TOPIC: Electronic Configuration of Atoms LEARNING COMPETENCY: Determine the magnetic property of the atom based on its electron configuration Activity No. 2

Electron Configuration and Magnetic Property of the Atom I. OBJECTIVES: 1. Write the electronic configuration of an atom. 2. Determine the magnetic property of an atom based on its electron configuration II. LESSON OVERVIEW The four sets of quantum numbers help us to realize the address of an electron in atom, however, the idea of how the electrons of heaviest elements are arranged in an atom is frightening. To solve this matter, electron configuration is a helpful way to arrange the electrons in atom using the three rules or principles such as, Aufbau principle, Pauli’s exclusion principle and Hund’s rule. III. A.MATERIALS: Pen and paper, periodic table of elements B. REFERENCES: Commission on Higher Education in collaboration with Philippine Normal University (2016). Teaching Guide for Senior High School General Chemistry 1, Commission on Higher Education K to 12 Transition Program Management Unit Office, 4th Floor, Commission on Higher Education, C.P. Garcia Ave., Diliman, Quezon City pp 178-186

Ibrahim, Michael et. al. (2020). Magnetic Resonance Imaging (MRI) Gadolinium, StatPearls Publishing LLC. IV. PROCEDURE: 1. Arrange the mnemonics.

electron

of

calcium

using

electronic

configuration

2. Distribute the electron per orbital and energy levels.

V. ANALYSIS: Q1. What does the electron configuration of an atom signify? ________________________________________________________________________ ________________________________________________________________________ Q2. How many unpaired electrons does calcium has? ________________________________________________________________________ ________________________________________________________________________ Q3. How will you describe the magnetic property of calcium? ________________________________________________________________________ ________________________________________________________________________

VI. GENERALIZATION: How do you write the electron configuration of an atom and what is the measurement of magnetic property of an atom using the electron configuration? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________

VII. APPLICATION: Magnetic Resonance Imaging, a medical imaging technique used in radiology helps to investigate the anatomy and physiology of the body. In diagnosis of diseases, contrast agents are being used to improve the sensitivity

and specificity of diagnostic images. How does gadolinium metal help in the diagnosis? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ VIII. ENRICHMENT ACTIVITY: Arrange the electrons of the following elements and describe the magnetic property. 1. Potassium 2. Sodium 3. Magnesium 4. Chlorine 5. Sulfur 6. Cesium

Prepared by: ALBERT M. RAMOS MT II, Zaragoza NHS-SHS Checked by: ROSEMARIE Z. BURAYAG EPS I, Science

LEARNING ACTIVITY SHEET GRADE LEVEL GRADE 11 STEM

QUARTER / DOMAIN 2nd QUARTER/Electronic Structure of Atoms

Name : _______________________________

WEEK & DAY NO. WEEK 3 DAY 4-5

LC CODE STEM_GC11ESIIa-b-58

Strand & Section: ___________________

TOPIC: Electronic Configuration of Atoms and Orbital diagram LEARNING COMPETENCY: Draw an orbital diagram to represent the electronic configuration of atoms Activity No. 3

Electron Configuration and Orbital Diagram of Atoms I. OBJECTIVES: 1. Write the electronic configuration of an atom. 2. Draw the orbital diagram of an electron configuration of an atom II. LESSON OVERVIEW The electron configuration of an element describes how electrons are distributed in its atomic orbitals. In filling up the orbitals according to Hund’s rule, it should be occupied by one electron at a time with the same spin before there is pairing. The more visual way of describing the distribution of all the electrons in a single atom is an orbital filling diagram which are represented by either circles or squares. III. A.MATERIALS: Pen and paper, periodic table of elements B. REFERENCES: Commission on Higher Education in collaboration with Philippine Normal University (2016). Teaching Guide for Senior High School General Chemistry 1, Commission on Higher Education K to 12 Transition Program Management Unit Office, 4th Floor, Commission on Higher Education, C.P. Garcia Ave., Diliman, Quezon City pp 178-186 Glencoe (2005) Chemistry Matter and Change. McGraw-Hill Companies, Inc. http://www.nclark.net/Atom

IV. PROCEDURE: 1. Assuming you are a manager of a prestigious new hotel in Cabanatuan – the “Grand Hyatt Hamsterdam”. Sketch a design of the hotel consisting of seven floors. Use the diagram below as reference of your structure: 1st floor–1 room 2nd floor–1 room – (2 stairs)–3 rooms 3rd floor–1 room – (2 stairs)–3 rooms – (2 stairs)–5 rooms 4th floor–1 room – (2 stairs)–3 rooms – (2 stairs)–5 rooms – (2stairs)– 7 rooms 5th floor-1 room – (2 stairs)–3 rooms – (2 stairs)–5 rooms – (2stairs)– 7 rooms 6th floor-1 room – (2 stairs)–3 rooms – (2 stairs)–5 rooms – (2stairs)– 7 rooms 7th floor-1 room – (2 stairs)–3 rooms – (2 stairs)–5 rooms – (2stairs)– 7 rooms 2. Your task is to fill rooms in your hotel. The penthouse is on the first floor and the less desirable rooms are on the top floor. 3. You must fill your hotel with your guest hamsters with the following rules: a. Hamsters are lazy. b. They can’t stand each other unless they are force them to put up with each other. c. If they are on the same room, be sure that they will face opposite directions. d. They stink, so you can’t put more than two hamsters in each room. 4. Book the following number of hamsters for the following days of the week: Monday – 13 hamsters Tuesday – 25 hamsters Wednesday – 7 hamsters Thursday – 18 hamsters Friday – 3 hamsters Saturday – 11 hamsters Sunday – 5 hamsters

V. ANALYSIS: Q1. Compare the Grand Hyatt Hamsterdam to electron orbitals. ________________________________________________________________________ ________________________________________________________________________

Q2. Describe an orbital. ________________________________________________________________________ ________________________________________________________________________ Q3. When hamsters go between floors, do they need to use energy? How is this related to electrons when they go between orbitals? ________________________________________________________________________ ________________________________________________________________________ Q4. How do you fill an atomic orbital? ________________________________________________________________________ ________________________________________________________________________ Q5. What role do energy and stability play in the way in which electrons are configured? ________________________________________________________________________ ________________________________________________________________________

VI. GENERALIZATION: How do you draw the electron configuration of an atom and what is your basis in filling up the orbitals? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________

VII. APPLICATION: Suppose that you live in a universe in which the Pauli Exclusion Principle states that a maximum of three, rather than two electrons can occupy a single orbital. Evaluate and explain the new chemical properties of the elements lithium and phosphorous. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________

VIII. ENRICHMENT ACTIVITY: Create a presentation showing the atomic orbitals. In your presentation, discuss the numbers and kinds of atomic orbitals per energy level and how the electrons are distributed in an orbital. Add sample illustrations for clearer discussion of the topic.

Prepared by: ALBERT M. RAMOS MT II, Zaragoza NHS-SHS Checked by: ROSEMARIE Z. BURAYAG EPS I, Science...