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4S Elements in Periodic Table
- Practical Electron Microscopy and Database -
- An Online Book -
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https://www.globalsino.com/EM/
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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
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).
Figure 4706. Relation between electron binding energies and atomic number (Z) (at low binding energies).
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