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horsena [70]
3 years ago
9

Which atom will have unpaired 3d electrons? Zn, Fe, Ca or Ge

Chemistry
1 answer:
Andrews [41]3 years ago
6 0

Fe

Explanation:

Only iron Fe has an atomic configuration in which the 3d electrons are unpaired.

    Iron Fe : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶ 4s²

 The d-sublevel has five orbitals and has a capacity to accommodate 10 electrons with 2 electrons in each of the 5 d-orbital.

The electronic configuration of has a 3d⁶

  Here instead of 10 electrons fully filling the d-orbitals, there are just 6 electrons.

According to Hund's rule of maximum multiplicity, electrons go into degenerate orbitals of sub-levels singly before pairing commences.

The first five electrons go into the d-orbitals singly first. The sixth electron will pair with the first orbital electron in d-orbital and the remaining four electrons are unpaired.

Learn more:

Orbitals brainly.com/question/9514863

#learnwithBrainly

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