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What is the electronic configuration of the alkali metal potassium (K)?

Practice Questions

Q1
What is the electronic configuration of the alkali metal potassium (K)?
  1. 1s² 2s² 2p⁶ 3s¹
  2. 1s² 2s² 2p⁶ 3s²
  3. 1s² 2s² 2p⁶ 3s² 3p¹
  4. 1s² 2s² 2p⁶ 3s² 3p⁶

Questions & Step-by-Step Solutions

What is the electronic configuration of the alkali metal potassium (K)?
  • Step 1: Identify the atomic number of potassium (K), which is 19.
  • Step 2: Understand that the electronic configuration shows how electrons are arranged in an atom.
  • Step 3: Start filling the electron shells according to the order of energy levels: 1s, 2s, 2p, 3s.
  • Step 4: Fill the 1s shell with 2 electrons: 1s².
  • Step 5: Fill the 2s shell with 2 electrons: 2s².
  • Step 6: Fill the 2p shell with 6 electrons: 2p⁶.
  • Step 7: Finally, fill the 3s shell with 1 electron: 3s¹.
  • Step 8: Combine all the filled shells to write the complete electronic configuration: 1s² 2s² 2p⁶ 3s¹.
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