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What is the value of the principal quantum number for the outermost electrons in
What is the value of the principal quantum number for the outermost electrons in potassium (K)?
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What is the value of the principal quantum number for the outermost electrons in potassium (K)?
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Potassium has an atomic number of 19, and its outermost electrons are in the n=4 shell.
Questions & Step-by-step Solutions
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Q: What is the value of the principal quantum number for the outermost electrons in potassium (K)?
Solution:
Potassium has an atomic number of 19, and its outermost electrons are in the n=4 shell.
Steps: 5
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Step 1: Identify the atomic number of potassium (K). The atomic number is 19.
Step 2: Understand that the atomic number tells us the number of electrons in a neutral atom. Potassium has 19 electrons.
Step 3: Determine the electron configuration of potassium. The configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹.
Step 4: Look at the highest energy level (shell) in the electron configuration. The highest number is 4 in the 4s¹.
Step 5: Conclude that the value of the principal quantum number for the outermost electrons in potassium is n=4.
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