Here are the electronic configurations of the first 100 elements in the periodic table:
- Hydrogen (H): 1s1
- Helium (He): 1s2
- Lithium (Li): [He] 2s1
- Beryllium (Be): [He] 2s2
- Boron (B): [He] 2s2 2p1
- Carbon (C): [He] 2s2 2p2
- Nitrogen (N): [He] 2s2 2p3
- Oxygen (O): [He] 2s2 2p4
- Fluorine (F): [He] 2s2 2p5
- Neon (Ne): [He] 2s2 2p6
- Sodium (Na): [Ne] 3s1
- Magnesium (Mg): [Ne] 3s2
- Aluminum (Al): [Ne] 3s2 3p1
- Silicon (Si): [Ne] 3s2 3p2
- Phosphorus (P): [Ne] 3s2 3p3
- Sulfur (S): [Ne] 3s2 3p4
- Chlorine (Cl): [Ne] 3s2 3p5
- Argon (Ar): [Ne] 3s2 3p6
- Potassium (K): [Ar] 4s1
- Calcium (Ca): [Ar] 4s2
- Scandium (Sc): [Ar] 3d1 4s2
- Titanium (Ti): [Ar] 3d2 4s2
- Vanadium (V): [Ar] 3d3 4s2
- Chromium (Cr): [Ar] 3d5 4s1
- Manganese (Mn): [Ar] 3d5 4s2
- Iron (Fe): [Ar] 3d6 4s2
- Cobalt (Co): [Ar] 3d7 4s2
- Nickel (Ni): [Ar] 3d8 4s2
- Copper (Cu): [Ar] 3d10 4s1
- Zinc (Zn): [Ar] 3d10 4s2
- Gallium (Ga): [Ar] 3d10 4s2 4p1
- Germanium (Ge): [Ar] 3d10 4s2 4p2
- Arsenic (As): [Ar] 3d10 4s2 4p3
- Selenium (Se): [Ar] 3d10 4s2 4p4
- Bromine (Br): [Ar] 3d10 4s2 4p5
- Krypton (Kr): [Ar] 3d10 4s2 4p6
- Rubidium (Rb): [Kr] 5s1
- Strontium (Sr): [Kr] 5s2
- Yttrium (Y): [Kr] 4d1 5s2
- Zirconium (Zr): [Kr] 4d2 5s2
- Niobium (Nb): [Kr
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