The Periodic Table
Bayani Gaba-gaba
The Periodic Table is far more than a wall chart of element names and symbols. It is a map that organises every known element by the structure of its atoms, and once you can read it you can predict how an element will behave, what it will react with, and what kind of compounds it will form.
In this lesson you will learn how elements are ordered by atomic number, what groups and periods tell you about electronic configuration, and why elements in the same group share similar chemistry. You will also discover why the noble gases are so reluctant to react and how to classify elements as metals or non-metals using the table itself.
Manufura
- Understand how elements are arranged in the Periodic Table: in order of atomic number, in groups and periods
- Understand how to deduce the electronic configurations of the first 20 elements from their positions in the Periodic Table
- Understand how to use electrical conductivity and the acid-base character of oxides to classify elements as metals or non-metals
- Identify an element as a metal or a non-metal according to its position in the Periodic Table
- Understand how the electronic configuration of a main group element is related to its position in the Periodic Table
- Understand why elements in the same group of the Periodic Table have similar chemical properties
- Understand why the noble gases (Group 0) do not readily react
Takardar Darasi
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Barka da kammala darasi akan The Periodic Table. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
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- Elements in the Periodic Table are arranged in order of: A) Relative atomic mass B) Atomic number C) Number of neutrons D) Electron shell number Answer: B
- An element has the electronic configuration 2, 8, 4. Which group does it belong to? A) Group 2 B) Group 8 C) Group 4 D) Group 14 Answer: C
- Which of the following is NOT a property of metals? A) Good electrical conductors B) Malleable C) Form acidic oxides D) Shiny when freshly cut Answer: C
- Why are noble gases unreactive? A) They have no electrons B) They have full outer electron shells C) They are all solids D) They have no protons Answer: B
- Elements in the same group of the Periodic Table have: A) The same number of electron shells B) The same number of protons C) The same number of outer-shell electrons D) The same atomic number Answer: C
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