Level: [1] Hydrogen

Level: [3] Lithium

Level: [4] Beryllium

Level: [11] Sodium

Level: [12] Magnesium

Level: [19] Potassium

Level: [20] Calcium

Level: [21] Scandium

Level: [22] Titanium

Level: [23] Vanadium

Level: [24] Chromium

Level: [25] Manganese

Level: [26] Iron

Level: [37] Rubidium

Level: [38] Strontium

Level: [39] Yttrium

Level: [40] Zirconium

Level: [41] Niobium

Level: [42] Molybdenum

Level: [43] Technetium

Level: [44] Ruthenium

Level: [55] Caesium

Level: [56] Barium

Level: [87] Francium

Level: [88] Radium

Level: [119] Ignitium (Ununennium)

Level: [120] Eiconium (Unbinilium)