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Chemistry Question

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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How do I solve for part A of this chemistry question?

 

Certainly! Below is the transcribed content suitable for an educational website: --- **Exercise Part A: Atomic Radius and Periodic Trends** **Question**: Explain why atomic radius decreases as you move to the right across a period for main-group elements but not for transition elements. **Activity**: Match the words in the left column to the appropriate blanks in the sentences on the right. **Options**: - larger - proton - neutron - constant - smaller - increases - decreases **Sentences**: 1. As you move to the right across a row in the periodic table for the main-group elements, the effective nuclear charge (Z_eff) experienced by the electrons in the outermost principal energy level ___, resulting in a stronger attraction between the outermost electrons and the nucleus and this results in a ___ atomic radii. 2. Across the row of transition elements, the number of electrons in the outermost principal energy level (highest n value) is nearly constant. As another ___ is added to the nucleus with each successive element, another electron is added, but that electron goes into an (n - 1) level. The number of outermost electrons stays constant, and they experience a roughly constant effective nuclear charge, keeping the radius approximately ___ after the first couple of elements in the series. **Submit/Feedback Area**: - Submit button - Incorrect; Try Again message - Provide Feedback link --- This explanation and activity aim to help learners understand the trends in atomic radius as you move across periods and down groups in the periodic table.
Transcribed Image Text:Certainly! Below is the transcribed content suitable for an educational website: --- **Exercise Part A: Atomic Radius and Periodic Trends** **Question**: Explain why atomic radius decreases as you move to the right across a period for main-group elements but not for transition elements. **Activity**: Match the words in the left column to the appropriate blanks in the sentences on the right. **Options**: - larger - proton - neutron - constant - smaller - increases - decreases **Sentences**: 1. As you move to the right across a row in the periodic table for the main-group elements, the effective nuclear charge (Z_eff) experienced by the electrons in the outermost principal energy level ___, resulting in a stronger attraction between the outermost electrons and the nucleus and this results in a ___ atomic radii. 2. Across the row of transition elements, the number of electrons in the outermost principal energy level (highest n value) is nearly constant. As another ___ is added to the nucleus with each successive element, another electron is added, but that electron goes into an (n - 1) level. The number of outermost electrons stays constant, and they experience a roughly constant effective nuclear charge, keeping the radius approximately ___ after the first couple of elements in the series. **Submit/Feedback Area**: - Submit button - Incorrect; Try Again message - Provide Feedback link --- This explanation and activity aim to help learners understand the trends in atomic radius as you move across periods and down groups in the periodic table.
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