Hydrogen (H)
1s¹
Helium (He)
1s²
Lithium (Li)
2s¹
Boron (B)
2p¹
Beryllium (Be)
2s²
Carbon (C)
2p²
Nitrogen (N)
2p³
Oxygen (O)
2p⁴
Fluorine (F)
2p⁵
Neon (Ne)
2p⁶
Sodium (Na)
3s¹
Magnesium (Mg)
3s²
Silicon (Si)
3p²
Aluminum (Al)
3p¹
Phosphorus (P)
3p³
Sulfur (S)
3p⁴
Chlorine (Cl)
3p⁵
Argon (Ar)
3p⁶
Potassium (K)
4s¹
Calcium (Ca)
4s
Scandium (Sc)
3d
Titanium (Ti)
3d
Vanadium (V)
3d
Chromium (Cr)
3d