Gd3+ Electron Configuration: 5 Facts You Should Know!

Gadolinium is a rarely found lanthanide series element in the periodic table. Thus, it is the f-block element. Let us discuss the electronic configuration of the Gd3+.

The electronic configuration of gadolinium is [Xe]4f7 5d1 6s2 and is found in the 6th period of the periodic table with an atomic symbol ‘Gd’ with an atomic mass of 157.25 u. It has an atomic number of 64. The electrons are arranged in atomic orbitals with different energies to attain an electronic configuration.

This article will explain about the electronic configuration of Gd3+, its ground state electronic configuration, orbital diagram, and much more.

How to Write Gd3+ Electron Configuration

The electronic configuration of Gd3+ is [Xe]4f7 5d1 6s2 and is written as follows:

  • The subshells are first represented by the respective notations of the letter symbol. These shells are represented by the principle quantum number ‘n’.
  • Now, determine the number of electrons in Gd3+.
  • Gd3+ will have 61 electrons as it will be formed after the loss of 3 electrons. These electrons are filled in the orbitals, and the obtained electronic configuration is [Xe]4f7.
  • The subshells should be completely or partially filled before the electron enters the next subshell level.

Gd3+ Electron Configuration Diagram

The electronic configuration of Gd3+ is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f7. The electrons are filled according to the formula: 2n2 where n= 1, 2, 3… n=1 for K, 2 for L, 3 for M, and so on. The electronic configuration diagram of Gd3+ is given below.

Gd3+ Electron Configuration Diagram

Gd3+ Electron Configuration Notation

The electronic configuration of Gd3+ is notated as [Xe]4f7.

Gd3+ Unabbreviated Electron Configuration

The unabbreviated electronic configuration of Gd3+ is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f7 which is stable because all the shells are either half-filled or fully filled.

Ground State Gd3+ Electron Configuration

The ground state electronic configuration of Gd3+  is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f7 which consists of 7 unpaired electrons. 

Ground State Gd3+ Orbital Diagram

In the ground state electron distribution, the orbitals are filled as per Pauli exclusion principle. The subshell s, p, d comprises of 1, 3, 5 orbital respectively with 2 electrons in opposite spins. The orbital diagram of Gd3+ is given below. 

Ground State Gd3+ Orbital Diagram

Conclusion

The electronic configuration of Gd3+ is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f7 which can also be written as [Xe]4f7. Gd3+ is formed after the loss of 3 electrons from neutral Gd. Gd3+ is a stable electronic configuration due to the presence of only half-filled and fully-filled orbitals.

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