What is the proper ranking of the following atoms (He, Li, Be, C, Na) in terms of atomic size? A. He < Li < Be < C < Na B. He < C < Be < Li < Na C. Na < C < Be < Li < He D. Na < Li < Be < C < He
What is the proper ranking of the following atoms (He, Li, Be, C, Na) in terms of atomic size? A. He < Li < Be < C < Na B. He < C < Be < Li < Na C. Na < C < Be < Li < He D. Na < Li < Be < C < He
Chemistry
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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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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What is the proper ranking of the following atoms (He, Li, Be, C, Na) in terms of atomic size?
A. He < Li < Be < C < Na
B. He < C < Be < Li < Na
C. Na < C < Be < Li < He
D. Na < Li < Be < C < He
Expert Solution
Step 1
Atomic size depends on the effective nuclear charge of the elements, as effective nuclear charge increases the atomic size decreases (due to the electron boundary decreases).
In group effective nuclear charge remains constant but new shell is added so the atomic size increases.
In period effective nuclear charge increases and the principle quantum no remains constant that is no new shell is added so atomic size decreases.
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