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  2. Energy level - Wikipedia

    en.wikipedia.org/wiki/Energy_level

    The energy level of the bonding orbitals is lower, and the energy level of the antibonding orbitals is higher. For the bond in the molecule to be stable, the covalent bonding electrons occupy the lower energy bonding orbital, which may be signified by such symbols as σ or π depending on the situation.

  3. Principal quantum number - Wikipedia

    en.wikipedia.org/wiki/Principal_quantum_number

    This causes the wave to display particle-like packets of energy called quanta. The difference between energy levels that have different n determine the emission spectrum of the element. In the notation of the periodic table, the main shells of electrons are labeled:

  4. Periodic table - Wikipedia

    en.wikipedia.org/wiki/Periodic_table

    The periodic table, ... This allows classification of the possible states an electron can take in various energy levels known as shells, divided into individual ...

  5. Ionization energies of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Ionization_energies_of_the...

    The first of these quantities is used in atomic physics, the second in chemistry, but both refer to the same basic property of the element. To convert from "value of ionization energy" to the corresponding "value of molar ionization energy", the conversion is: 1 eV = 96.48534 kJ/mol 1 kJ/mol = 0.0103642688 eV [12]

  6. Molar ionization energies of the elements - Wikipedia

    en.wikipedia.org/wiki/Molar_ionization_energies...

    This is the energy per mole necessary to remove electrons from gaseous atoms or atomic ions. The first molar ionization energy applies to the neutral atoms. The second, third, etc., molar ionization energy applies to the further removal of an electron from a singly, doubly, etc., charged ion.

  7. Ionization energy - Wikipedia

    en.wikipedia.org/wiki/Ionization_energy

    This is due to the spin-orbit splitting of the 6p shell (lead is removing an electron from the stabilised 6p 1/2 level, but bismuth is removing one from the destabilised 6p 3/2 level). Predicted ionization energies show a much greater decrease from flerovium to moscovium, one row further down the periodic table and with much larger spin-orbit ...

  8. Term symbol - Wikipedia

    en.wikipedia.org/wiki/Term_symbol

    # is an additional number denoted to each energy level of given n′ℓ (there can be multiple energy levels of given electronic configuration, denoted by the term symbol). # denotes each level in order, for example, # = 10 is for a lower energy level than # = 9 level and # = 1 is for the highest level in a given n′ℓ. An example of Paschen ...

  9. Electron configuration - Wikipedia

    en.wikipedia.org/wiki/Electron_configuration

    In this case, it is necessary to supplement the electron configuration with one or more term symbols, which describe the different energy levels available to an atom. Term symbols can be calculated for any electron configuration, not just the ground-state configuration listed in tables, although not all the energy levels are observed in ...