Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter2: Atomic Structure And Periodicity
Section: Chapter Questions
Problem 102E: Which of the following electron configurations correspond to an excited state? Identify the atoms...
Related questions
Question
Transcribed Image Text:Write the ground-state electron configuration for calcium, Ca.
You may write either the full or condensed electron configuration.
x| x,
He -. 8.
Write out the ground-state electron configuration for chlorine, Cl.
You may write either the full or condensed electron configuration.
x x. He-, 5.
Expert Solution
Step 1
a)
• Calcium is a chemical element whose atomic number is 20 and is placed in group 2 in modern periodic table.
• Calcium is represented by the chemical symbol Ca
• Since, we know that the atomic number of a neutral atom is equal to the number of electrons in the neutral atom. Thus, calcium has 20 electrons in it.
• Therefore, the complete electronic configuration of 20Ca is-
1s2 2s2 2p6 3s2 3p6 4s2
• This is the required full ground state electronic configuration of calcium.
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