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What is the electron configuration of the alkali metal potassium (K)?
What is the electron configuration of the alkali metal potassium (K)?
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Q1
What is the electron configuration of the alkali metal potassium (K)?
1s² 2s² 2p⁶ 3s¹
1s² 2s² 2p⁶ 3s²
1s² 2s² 2p⁶ 3s² 3p¹
1s² 2s² 2p⁶ 3s² 3p²
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The electron configuration of potassium (K) is 1s² 2s² 2p⁶ 3s¹.
Questions & Step-by-step Solutions
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Q
Q: What is the electron configuration of the alkali metal potassium (K)?
Solution:
The electron configuration of potassium (K) is 1s² 2s² 2p⁶ 3s¹.
Steps: 9
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Step 1: Identify the atomic number of potassium (K), which is 19.
Step 2: Understand that the electron configuration shows how electrons are arranged in an atom.
Step 3: Start filling the electron shells according to the Aufbau principle, which states that electrons fill the lowest energy levels first.
Step 4: Fill the 1st shell (1s) with 2 electrons: 1s².
Step 5: Fill the 2nd shell (2s and 2p) with 8 electrons: 2s² 2p⁶.
Step 6: Now, we have used 10 electrons (2 from 1s and 8 from 2s and 2p).
Step 7: The remaining 9 electrons will go into the 3rd shell, starting with 3s.
Step 8: Fill the 3s subshell with 1 electron: 3s¹.
Step 9: Combine all the filled subshells to get the complete electron configuration: 1s² 2s² 2p⁶ 3s¹.
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