Total number of d-electrons in an element of atomic number 26 is:
Correct answer: B. 6
- A. 4
- B. 6
- C. 5
- D. 7
Explanation
The total number of d-electrons in an atom is determined by its atomic number. For an atom with an atomic number of 26, which corresponds to the element iron (Fe), the electron configuration can be determined as follows: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶. To find the total number of d-electrons, we look at the electrons in the 3d subshell, which is 6 d-electrons. So, the total number of d-electrons in an atom of atomic number 26 (iron) is 6.
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