+"4f7" describes an [Electron Configuration](/wiki/Electron_Configuration) where the 4f subshell contains seven electrons. This precisely half-filled arrangement confers particular stability and often distinct [Magnetism](/wiki/Magnetism), notably observed in certain [Lanthanides](/wiki/Lanthanides) and their ions.
+## See also
+- [F Orbital](/wiki/F_Orbital)
+- [Atomic Structure](/wiki/Atomic_Structure)
+- [Quantum Mechanics](/wiki/Quantum_Mechanics)
... 1 more lines