Mendelevium Electron Configuration:7 Easy Step-by-Step Guide

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Mendelevium is an inner transition element. Let us explore details about its electronic configuration here.

The electronic configuration of Mendelevium is 2,8,18,32,31,8,2. It is synthetic element with symbol Md. It is a f-block element with an atomic number of 101. It is a member of actinide series.  It belongs to period 7th.

We are going to discuss in this article, various important facts related to electronic configuration of Mendelevium.

How to write Mendelevium electron configuration?

The electronic configuration of Mendelevium is written by taking into consideration the rules given below.

  • Aufbau principle explains that in the ground state of an atom, electrons are filled up in increasing order of their energies of the atomic orbitals.
  • Pauli’s exclusion principle explains that not more than two electrons with opposite spin can occupy the same orbital.
  • Hund’s rule of maximum multiplicity explains that electrons are first singly-filled in each orbital in a subshell then electron pairing occur in them.
  • By Keeping the above rules in mind, the electronic configuration of Md is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f13.

Mendelevium electronic configuration diagram

The electronic configuration of Mendelevium is [Rn] 5f13 7s2. The arrangement of electrons in various orbitals is as under –

  • The s orbital can have 2 electrons.
  • The p orbital can have 6 electrons.
  • The d orbital can have 10 electrons.
  • The f electron can have 14 electrons.
mendelevium electron configuration
Electronic configuration diagram of Md

                             

Mendelevium electronic configuration notation

The Md has electronic configuration notation as [Rn] 5f13 7s2.

Mendelevium unabbreviated electronic configuration

The Md has unabbreviated electronic configuration as 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f13 6s2 6p6 7s2.

Ground state Mendelevium electronic configuration

The ground state electronic configuration for Md is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f13.

Excited state Mendelevium electronic configuration

The Md has excited state electronic configuration as [Rn] 7s1 5f14.

Ground state Mendelevium orbital diagram

The Md has ground state electronic configuration as [Rn] 5f13 7s2.

The orbital diagram representing distribution of electrons in Tm over energy levels is as under-

  • The K shell in Md has 2 electrons.
  • The L shell in Md has 8 electrons.
  • The M shell in Md has 18 electrons.
  • The N shell in Md has 32 electrons.
  • The O shell in Md has 31 electrons.
  • The P shell in Md has 8 electrons.
  • The Q shell in Md has 2 electrons.
mendelevium electron configuration
Ground state orbital diagram of Md

                    

Conclusion

Mendelevium occurs in 7th period. It has an electronic configuration as 2,8,18,32,31,8,2. It has valence shell electronic configuration as 5f13 7s2.

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