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Slide 1 of 28 Classifying the Elements 6.2 Section 6.2-2 Classifying the Elements II.

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Presentation on theme: "Slide 1 of 28 Classifying the Elements 6.2 Section 6.2-2 Classifying the Elements II."— Presentation transcript:

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2 Slide 1 of 28 Classifying the Elements 6.2 Section Classifying the Elements II

3 Slide 2 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Alkali Metals Group Alkali Metals The Alkali Metals group are the 1 st column in on the left hand side of the periodic table. They (along with the alkaline earth metals) occupy the “s” sublevel. Elements in the group include Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr). Although Hydrogen is listed shown in this group, it is not part of the Alkali Metals as it is not a metal.

4 Slide 3 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Alkali Metals Group ↓

5 Slide 4 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Alkali Metals Group Properties of Alkali Metals: Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), & Francium (Fr) 1 Valence Electron → Becomes a +1 ion Shiny Solids Malleable & Ductile (easy to shape) Good Conductor of Electricity Low Density Low Melting Point (Temperature) Intense chemical reactions with air or water Not found as element, but in a compound such as NaCl

6 Slide 5 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Alkaline Earth Metals Group Alkaline Earth Metals The Alkaline Earth Metals group are the 2 nd column in on the left hand side of the periodic table. They (along with the alkali metals) occupy the “s” sublevel. Elements in this group include Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).

7 Slide 6 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Alkaline Earth Metals Group ↓

8 Slide 7 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Alkaline Earth Metals Group Properties of Alkaline Earth Metals: Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), & Radium (Ra) 2 Valence Electrons → Becomes a +2 ion Relatively Malleable & Ductile (easy to shape) Relatively Good Conductor of Electricity Relatively Low Density Relatively intense chemical reactions with air or water Not found as element, but in a compound such as MgCl 2 Basically, reactive, but not as reactive as Alkali Metals.

9 Slide 8 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Transition Metals Group Transition Metals The Transition Metals are the recessed group of elements located directly to the right of the Alkaline Earth Metals. This groups occupies the “d” sublevel when electron shells are being filled.

10 Slide 9 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Transition Metals Group ↓

11 Slide 10 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Transition Metals Group Properties of Transition Metals: Metals in “d” sublevel High Melting Points Vary in Abundance Relatively High Density Some transition metals can have more than one ionic state. Used to fight corrosion (chromium) Used to add color to paint Cr 2 O 3 (green) PbCrO 4 (red) Used in coins (silver, copper, gold, nickel, zinc) Sterling Silver → Silver + 7.5% copper Bronze → Copper + Tin Brass → Copper + Zinc

12 Slide 11 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Halogen Group Halogen The Halogen Group is located in the 2 nd column in on the right hand side of the periodic table. They (along with the Nobel Gases and other nonmetals) occupy the “p” sublevel. Elements in this group include Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At). All of these elements are nonmetals.

13 Slide 12 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Halogen Group ↓

14 Slide 13 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Halogen Group Properties of Halogens: Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), & Astatine (At) 7 Valence Electrons → Becomes a -1 ion Very Reactive Poor Conductor of Electricity Exist as diatomic molecules Cl 2, I 2, Br 2 Like to react with alkali and alkaline earth metals

15 Slide 14 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Nobel Gases Group Noble Gas The Noble Gas or Inert Gas Group is located in the last column in on the right hand side of the periodic table. They (along with the halogen group elements and other nonmetals) occupy the “p” sublevel. Elements in this group include Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), and Xenon (Xe). All of these elements are nonmetals.

16 Slide 15 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Nobel Gases Group ↓

17 Slide 16 of 28 © Copyright Pearson Prentice Hall Classifying the Elements > Nobel Gases Group Properties of Nobel Gases: Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), & Xenon (Xe) 8 Valence Electrons → Does not become an ion Essentially, does not react. Helium → coldest refrigerant at -269 °C (remember, -273 ˚C is absolute zero). Argon used in light bulbs to keep the filaments from burning. Neon gas used in signs. Helium used in lighter than air balloons.

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