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Calcium 20
Real configuration
Shells: 2,8,8,2
Orbitals: 1s2, 2s2, 2p6, 3s2, 3p6, 4s2
 spdf
12
226
32610
4261014
Singularity 60 = 10 + 10 + 0 + 40
Inner + outer Shells
2+2=4
Inner + outer Orbitals
10+10=20
Filling Orbital
Ground State Electron Configuration with free Orbitals0,0,0,0
Ground State Electron Configuration with compressed Orbitals0,0,10,30


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