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

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

Options:

Correct Answer: 1s² 2s² 2p⁶ 3s¹

Solution:

The electronic configuration of potassium (K) is 1s² 2s² 2p⁶ 3s¹.

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

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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