33. Which element has this electron configuration:  1s2 2s2 2p6 3s2 3p6 4s2 3d61 pointFeCuMnCo

Break Down the Problem

1. Identify the total number of electrons in the given electron configuration.
2. Determine which element corresponds to that specific configuration.
3. Compare the configuration with the options provided to find the correct element.

Relevant Concepts

• The electron configuration describes the distribution of electrons in an atom's orbitals.
• Each element's atomic number equals the number of electrons in a neutral atom.

Analysis and Detail

1. Start with the given electron configuration:
   $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6$

2. Calculate the total number of electrons:

   • 1s: 2 electrons
   • 2s: 2 electrons
   • 2p: 6 electrons
   • 3s: 2 electrons
   • 3p: 6 electrons
   • 4s: 2 electrons
   • 3d: 6 electrons
     Total = $2 + 2 + 6 + 2 + 6 + 2 + 6 = 26$ electrons.

3. The element with 26 electrons is Iron (Fe).

Verify and Summarize

• Among the given options (Fe, Cu, Mn, Co), the only one that matches the total number of electrons (26) and the electron configuration is Iron (Fe).

Final Answer

The element with the electron configuration $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6$ is Iron (Fe).