4S Elements in Periodic Table
- Practical Electron Microscopy and Database -
- An Online Book -

http://www.globalsino.com/EM/  



 

This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.

 

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Table 4706a. 4s elements in periodic table


1S 2s 3s 4s 5s 6s 7s 2p 3p 4p 5p 6p 3d 3d 4d 5d 6d 4f 5f Elements Structure of the periodic table

 

Table 4706b. Electron configurations, filling orbitals, and valence electrons of 4s elements

Atomic Number Symbol Name Electron Configuration Filling Orbital Valence Electrons
19 K Potassium  1s2 2s2p6 3s2p6 4s1  4s1  4s1 
20 Ca Calcium  1s2 2s2p6 3s2p6 4s2  4s2 4s2

Figure 4706 shows the relation between electron binding energies and atomic number (Z).

Relation between electron binding energies and atomic number (Z)

Figure 4706. Relation between electron binding energies and atomic number (Z) (at low binding energies).

 

 

 

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