UNIT 2: Matter and Energy RM32Lesson 6: Periodic Table Families

Understanding Valence Electrons

The models in the table below show various atoms in which the center black circle represents the nucleus andthe rings represent energy levels. Electrons are shown only on the outermost energy level of each model. Usethe Periodic Table of Elements to provide the missing Information.

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UNIT 2: Matter and Energy RM 32 connnuedLesson 6: Perlodlc Table Families

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Interpreting Data and Drawing Conclusions

1. Which of the eight elements In the table Is least likely to gain or lose electrons? Why?

2. Which of the eight elements Is most likely to lose only one electron? Why?

3. Which of the eight elements is most likely to gain only one electron? Why?

4. Explain why all eight 01 the elements In the table are located on the same horizontal row of the PeriodicTable.

Propertiesof Metals, Nonmetals, and Metalloids

I Nonmetals Metalloids IMetals

8.5(: Periodic Tab Interpreting the Periodic TableMatter and Enel Examine the hypothetical periodic table shown below. Use this periodic table to answer

rl ------------------------- the questions that follow.- .

STUDENT JOURNAL

Part I: Patterns and Codes, continued1. How many periods are shown on the Periodic Table? _

2. How is the number of energy leeels in an atom related to period number?

3. To which period does the Lanthanide series belong? Actinide? _

4. Use the observed pattern to predict the energy level number of the valence shell for the followingneutral atoms:

Rb - Rubidium (atomic number 37) _

Cs-Cesium (atomic number 55) _

Fr - Francium (atomic number 87) _

All elements of the Lanthanide series _

All elements of the Actinide series _

Ni - Nickel (atomic number 28) _

Hg - Mercury (atomic number 80) _

Kr -Krypton (atomic number 36) _

5. What pattern do you see asyou compare elements that belong in groups 1A to SA on the PeriodicTable?

6. Use this observed pattern to predict how many valence electrons would be found in the followingneutral atoms:

I - iodine (atomic number 53) _

Ra- Radium (atomic: number 88) _

Ga - Gallium (atomic number 31) _

Sn - Tin (atomic number 50) _

Sb - Antimony (atomic number 51) _

Rn - Radon (atomic number 86) _

7. Use the Periodic Table to name: the element with two valence electrons in the fourth energy level

_________ ; and, the element with six valence electrons in the second energy level

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Unit: 03 LOIIOIlI 01

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1. Which pair of elements has the same number of valence electrons?

2. Which pair of elements is in the same period?

3. Which pair of elements is in the same group?

4. Which element has the smallest atomic number?

5. Which element(s) would be classified as a metal?

6. If the atomic number of Element D is 20, what is the atomic number of ElementR?

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