Which one is the electronic configuration of $Fe^{2+}$?

  • A
    $1s^2, 2s^2 2p^6, 3s^2 3p^6 3d^6$
  • B
    $1s^2, 2s^2 2p^6, 3s^2 3p^6 3d^4, 4s^2$
  • C
    $1s^2, 2s^2 2p^6, 3s^2 3p^6 3d^5, 4s^1$
  • D
    None of these

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Similar Questions

The quantum number/s needed to describe an electron fully in an atom is/are:

The $p_x$ orbital can accommodate:

Which among the following species has the same number of electrons in its outermost as well as penultimate shell?

Arrange the following orbitals in increasing order of energy based on the given values of principal quantum number $(n)$ and azimuthal quantum number $(l)$:
$(1) n = 4, l = 1$
$(2) n = 4, l = 0$
$(3) n = 3, l = 1$
$(4) n = 3, l = 2$

What are the values of $n$ and $l$ for the $f$-subshell with the lowest energy?

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