Neptunium is an actinide having 7 valence electrons. Let us explore its electronic configuration.
The electronic configuration of Np is [Rn] 5f4 6d1 7s2. Np has a half-life of 2.144 million years and is majorly synthesized artificially. Edwin McMillan and Philip Abelson were the discoverers of Np.
Np has 93 electrons systematically distributed into various shells. In this article, we will be discussing about the electronic configuration of Np.
How to write neptunium electron configuration
The electronic configuration of Np is [Rn] 5f4 6d1 7s2, with atomic number 93 which is written according to Aufbau’s principle as follows.
- S orbital can at max have 2 electrons
- P orbital can accommodate 6 electrons
- D orbital can have 10 electrons, and
- F orbital can accommodate 14 electrons.
Neptunium electron configuration diagram
The electronic configuration of Np is [Rn] 5f4 6d1 7s2, which can be drawn as follows-
Neptunium electron configuration notation
The electron configuration notation of Np is written as follows-
- [Rn] 5f46d17s2 as per noble gas Radon.
- 1s22s22p63s23p63d104s24p64d104f145s25p65d105f46s26p66d17s2 in terms of orbitals.
Neptunium unabbreviated electron configuration
The unabbreviated electron configuration of Np is 1s22s22p63s23p63d104s24p64d104f145s25p65d105f46s26p66d17s2
Ground state neptunium electron configuration
The ground state electronic configuration of Np is 1s22s22p63s23p63d104s24p64d104f145s25p65d105f46s26p66d17s2
Excited state of neptunium electron configuration
The excited state of Np electron configuration is 1s22s22p63s23p63d104s24p64d104f145s25p65d105f46s26p66d07s27p1
Ground state neptunium orbital diagram
The ground state electronic configuration of Np is 1s22s22p63s23p63d104s24p64d104f145s25p65d105f46s26p66d17s2 which is drawn as follows-
Np has 24 available isotopes out of which 237Np is the most stable isotope. Np is named after Neptune (the planet) and shows radioactivity. Np is an amphoteric oxide and shows +2,+3,+4,+5,+6, and +7 oxidation states.