Questions and Answers
Which group of elements is known as Alkali Metals?
Which group of elements is referred to as Alkaline Earth Metals?
Transition Metals are found in which group?
Halogens are located in which group?
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Noble Gases are found in which group?
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Where are metals located on the periodic table?
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Where can metalloids be found?
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Where are nonmetals located?
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What do energy levels indicate in the periodic table?
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What are valence electrons?
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Study Notes
Element Classes Overview
- Alkali Metals are found in Group 1 (1A) of the periodic table; they are highly reactive and have one valence electron.
- Alkaline Earth Metals occupy Group 2 (2A); they are less reactive than alkali metals and possess two valence electrons.
- Transition Metals make up Groups 3-12 (_B); they are characterized by a wide range of oxidation states and are known for forming colorful compounds.
Halogens and Noble Gases
- Halogens are located in Group 17 (7A); they are very reactive nonmetals with seven valence electrons and include elements like fluorine and chlorine.
- Noble Gases, found in Group 18 (8A), are inert due to their complete valence shell. They include helium, neon, and argon.
Metal Classification
- Metals are situated to the left of the zig-zag line on the periodic table; they are typically solid at room temperature, good conductors of heat and electricity.
- Metalloids, also known as semi-metals, are positioned on the zig-zag line (except for aluminum and astatine); they have properties intermediate between metals and nonmetals.
Nonmetals
- Nonmetals are found to the right of the zig-zag line; they are varied in state (some gases, some solids) and generally poor conductors.
Atomic Structure
- Energy Levels refer to the shells that electrons occupy around the nucleus; all elements in the same horizontal period have the same number of energy levels, which increase by one as you move vertically down a group.
- Valence Electrons are the outermost electrons that participate in chemical bonding; their number is indicated in Lewis diagrams and increases by one as you move from left to right across a period, remaining consistent within a group.
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Description
Explore the basic classifications of elements in the periodic table with these flashcards. From Alkali Metals to Noble Gases, each card provides essential definitions that enhance your understanding of chemistry. Perfect for students or anyone looking to solidify their knowledge of elemental categories.
