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Questions and Answers
What are alkali metals?
What are alkali metals?
- Gaseous elements in Group 0
- Intermediate properties between metals and nonmetals
- Very reactive with one valence electron (correct)
- Reactive, but less than alkaline earth metals
What are alkaline earth metals?
What are alkaline earth metals?
- Intermediate between metals and nonmetals
- Unreactive gases in Group 0
- Very reactive, with two valence electrons (correct)
- Less reactive than alkali metals (correct)
What are transition metals?
What are transition metals?
Elements in groups 3 through 12 of the periodic table.
What is a metalloid?
What is a metalloid?
What are halogens?
What are halogens?
What are noble gases?
What are noble gases?
What are lanthanides?
What are lanthanides?
What are actinides?
What are actinides?
Flashcards
Alkali Metals
Alkali Metals
Very reactive metals with one valence electron.
Alkaline Earth Metals
Alkaline Earth Metals
Very reactive metals with two valence electrons.
Transition Metals
Transition Metals
Elements in groups 3 through 12 of the periodic table.
Metalloids
Metalloids
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Halogens
Halogens
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Noble Gases
Noble Gases
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Lanthanides
Lanthanides
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Actinides
Actinides
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Study Notes
Alkali Metals
- Extremely reactive elements with one valence electron.
- Found in Group 1 of the periodic table.
Alkaline Earth Metals
- Reactive, but less so than alkali metals.
- Contains two valence electrons and located in Group 2 of the periodic table.
Transition Metals
- Consist of 38 elements found in groups 3 through 12.
- Characterized by ductility, malleability, and their ability to conduct electricity and heat.
- Often referred to as rare earth elements.
Metalloids
- Elements exhibiting properties between metals and nonmetals.
- Function as electrical semiconductors.
Halogens
- Group 17 elements, known for high reactivity.
- Comprise nonmetals such as fluorine, chlorine, bromine, iodine, and astatine.
Noble Gases
- Group 18 elements including helium, neon, argon, krypton, xenon, and radon.
- Previously thought to be unreactive due to full valence shells; however, compounds of xenon, krypton, and radon are now known.
Lanthanides
- A series of metallic elements in Group 3, often classified as rare earth metals.
- The series includes elements but sometimes excludes lanthanum (atomic number 57).
Actinides
- Comprise elements with atomic numbers ranging from 89 to 103.
- Located in the row beneath the lanthanides in the periodic table, also regarded as rare earth metals.
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