What is the electron configuration of the element with atomic number 26?

What is the electron configuration of the element with atomic number 26?

Step 1: Identify the element with atomic number 26. This element is iron (Fe).
Step 2: Understand that the electron configuration describes how electrons are distributed in the atom's orbitals.
Step 3: Start filling the orbitals with electrons according to the Aufbau principle, which states that electrons fill the lowest 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: Finally, fill the 3d orbital with the remaining 6 electrons: 3d6.
Step 11: Combine all the filled orbitals to write the complete electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d6.

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