Textbook Question
How many protons and electrons are in each of the following ions? (d) Au3+
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Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory
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McMurry 8th EditionCh.6 - Ionic Compounds: Periodic Trends and Bonding TheoryProblem 42
McMurry 8th EditionCh.6 - Ionic Compounds: Periodic Trends and Bonding TheoryProblem 42Chapter 6, Problem 42
What is the electron configuration of Ca2+?
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Step 1: Identify the atomic number of calcium (Ca), which is 20. This means a neutral calcium atom has 20 electrons.
Step 2: Write the electron configuration for a neutral calcium atom. The configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s².
Step 3: Recognize that Ca²⁺ indicates the loss of 2 electrons from the neutral atom.
Step 4: Remove the 2 electrons from the outermost shell (4s orbital) of the neutral calcium electron configuration.
Step 5: Write the electron configuration for Ca²⁺ after removing the 2 electrons: 1s² 2s² 2p⁶ 3s² 3p⁶.
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