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Questions and Answers
Which elements are included in the s block of the periodic table?
How many elements are there in each p block period?
6
How many elements are in the d block?
10
What is the electron configuration for silicon (Si)?
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What is the electron configuration for chlorine (Cl)?
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The f block contains inner transition elements, specifically two rows at the bottom of the periodic table, and has a total of _____ elements.
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The 4s sublevel fills before the 3d sublevel.
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What elements are included in the s block?
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Which groups of elements are found in the p block?
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How many elements are there in each d block?
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What is the maximum number of electrons that can be held in the f block?
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What is the electron configuration for silicon (Si)?
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What is the electron configuration for chlorine (Cl)?
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What fills before the 3d sublevel during electron configuration?
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Study Notes
Periodic Table Blocks
- s Block: Includes hydrogen, helium, and elements from Group 2A (2).
- p Block: Comprises elements in Group 3A (13) to Group 8A (18) with six elements per period due to three p orbitals holding up to six electrons.
d Block and f Block
- d Block: Contains transition elements; 10 elements per block as five d orbitals accommodate 10 electrons.
- f Block: Comprises inner transition elements with two rows at the table's bottom; contains 14 elements as seven f orbitals hold up to 14 electrons.
Electron Configuration Notation
- Negative Values in Subshell Labels: Subshells will use negative values to denote ml, filling negative ml first before positive values for electrons.
- Sublevel Filling Order: The filling order follows n (period) and l (sublevel) values; example configurations illustrate electron filling by period and sublevel.
Sample Electron Configurations
- Silicon (Si, atomic number 14): Configuration is 1s² 2s² 2p⁶ 3s² 3p².
- Chlorine (Cl, atomic number 17): Configuration is 1s² 2s² 2p⁶ 3s² 3p⁵.
Key Filling Principles
- The 4s sublevel fills before the 3d sublevel due to lower energy.
- Similar filling order observed in subsequent periods (e.g., 5s before 4d, 6s before 5d).
Periodic Table Blocks
- s Block: Includes hydrogen, helium, and elements from Group 2A (2).
- p Block: Comprises elements in Group 3A (13) to Group 8A (18) with six elements per period due to three p orbitals holding up to six electrons.
d Block and f Block
- d Block: Contains transition elements; 10 elements per block as five d orbitals accommodate 10 electrons.
- f Block: Comprises inner transition elements with two rows at the table's bottom; contains 14 elements as seven f orbitals hold up to 14 electrons.
Electron Configuration Notation
- Negative Values in Subshell Labels: Subshells will use negative values to denote ml, filling negative ml first before positive values for electrons.
- Sublevel Filling Order: The filling order follows n (period) and l (sublevel) values; example configurations illustrate electron filling by period and sublevel.
Sample Electron Configurations
- Silicon (Si, atomic number 14): Configuration is 1s² 2s² 2p⁶ 3s² 3p².
- Chlorine (Cl, atomic number 17): Configuration is 1s² 2s² 2p⁶ 3s² 3p⁵.
Key Filling Principles
- The 4s sublevel fills before the 3d sublevel due to lower energy.
- Similar filling order observed in subsequent periods (e.g., 5s before 4d, 6s before 5d).
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Description
Test your knowledge on the s and p blocks of the periodic table. This quiz covers the essential elements and group classifications. Perfect for students wanting to solidify their understanding of these key areas in chemistry.
