Group 1A, 1 are the alkali metals (but NOT H) Group 2A, 2 are the alkaline earth metals H The group B are called the transition elements These are called the inner transition elements, and they belong here Groups of elements - family names Group 1,IA – alkali metals Forms a “base” (or alkali) when reacting with water (not just dissolved!) Group 2, 2A – alkaline earth metals Also form bases with water do not dissolve well, hence “earth metals” Group 17, 7A – halogens Means “salt-forming” Įlectron Configurations in Groups Elements can be sorted into 4 different groupings based on their electron configurations : Noble gases Representative elements Transition metals Inner transition metals Let’s now take a closer look at these.Įlectron Configurations in Groups Noble gases are the elements in Group 18, 8A (also called Group 0) Previously called “ inert gases ” because they rarely take part in a reaction very stable = don’t react Noble gases have an electron configuration that has the outer s and p sublevels completely full Įlectron Configurations in Groups Representative Elements are in Groups 1,1A through 17,7A Display wide range of properties, thus a good “representative” Some are metals, or nonmetals, or metalloids some are solid, others are gases or liquids Their outer s and p electron configurations are NOT filled Įlectron Configurations in Groups Transition metals are in the “B” columns of the periodic table or columns 3-12 Electron configuration has the outer s sublevel full, and is now filling the “ d” sublevel A “transition” between the metal area and the nonmetal area Examples are gold, copper, silver Įlectron Configurations in Groups Inner Transition Metals are located below the main body of the table, in two horizontal rows Electron configuration has the outer s sublevel full, and is now filling the “f” sublevel Formerly called “rare-earth” elements, but this is not true because some are very abundant Įlements in the 1A-7A (1,2,13-17) groups are called the representative elements outer s or p filling 1A 2A 3A 4A 5A 6A 7A 8A Squares in the Periodic Table The periodic table displays the symbols and names of the elements, along with information about the structure of their atoms: Atomic number and atomic mass Black symbol = solid red = gas blue = liquid (from the Periodic Table on our classroom wall) Section 6.2 Classifying the Elements OBJECTIVES: Distinguish representative elements and transition metals. Section 6.2 Classifying the Elements OBJECTIVES: Classify elements based on electron configuration. Section 6.2 Classifying the Elements OBJECTIVES: Describe the information in a periodic table. Horizontal rows = periods There are 7 periods Vertical column = group (or family) Similar physical & chemical prop. The Periodic Law says: When elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties. As more were discovered, chemists realized they needed a way to organize the elements. Section 6.1 Organizing the Elements A few elements, such as gold and copper, have been known for thousands of years - since ancient times Yet, only about 13 had been identified by the year 1700. Section 6.1 Organizing the Elements OBJECTIVES: Identify three broad classes of elements. Section 6.1 Organizing the Elements OBJECTIVES: Compare early and modern periodic tables. Section 6.1 Organizing the Elements OBJECTIVES: Explain how elements are organized in a periodic table. Huge bundle of resources with every topic covered.Ĭomplete set of concise, modern presentations for Edexcel IGCSE Chemistry (4CH1) Chapters 1 - 7 Contains colour coded specification points with handmade vector graphics.Chemistry - Chp 6 - The Periodic Table Revisited - PowerPoint The complete Edexcel IGCSE Chemistry course from start to finish.
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