What is the electronic configuration of the element with atomic number 29?

What is the electronic configuration of the element with atomic number 29?

Step 1: Identify the element with atomic number 29. This element is Copper (Cu).
Step 2: Understand that the electronic configuration shows how electrons are arranged in an atom.
Step 3: Start filling the electron orbitals according to the Aufbau principle, which states that electrons fill lower energy levels first.
Step 4: Fill the 1s orbital with 2 electrons: 1s2.
Step 5: Fill the 2s orbital with 2 electrons: 2s2.
Step 6: Fill the 2p orbital with 6 electrons: 2p6.
Step 7: Fill the 3s orbital with 2 electrons: 3s2.
Step 8: Fill the 3p orbital with 6 electrons: 3p6.
Step 9: Fill the 4s orbital with 2 electrons: 4s2.
Step 10: Now, fill the 3d orbital. Copper has 9 electrons in the 3d orbital: 3d9.
Step 11: Combine all the filled orbitals to write the complete electronic configuration: [Ar] 4s2 3d9.

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