Total Isotope Count by Element Batch
- Elements 1-10 (Hydrogen to Neon): 62 isotopes
- Hydrogen: 7
- Helium: 8
- Lithium: 9
- Beryllium: 12
- Boron: 12
- Carbon: 15
- Nitrogen: 15
- Oxygen: 16
- Fluorine: 16
- Neon: 17
- Elements 11-20 (Sodium to Calcium): 91 isotopes
- Sodium: 20
- Magnesium: 17
- Aluminum: 20
- Silicon: 21
- Phosphorus: 19
- Sulfur: 16
- Chlorine: 22
- Argon: 20
- Potassium: 20
- Calcium: 22
- Elements 21-30 (Scandium to Zinc): 93 isotopes
- Scandium: 18
- Titanium: 18
- Vanadium: 18
- Chromium: 19
- Manganese: 19
- Iron: 20
- Cobalt: 19
- Nickel: 29
- Copper: 28
- Zinc: 33
- Elements 31-40 (Gallium to Zirconium): 117 isotopes
- Gallium: 24
- Germanium: 24
- Arsenic: 27
- Selenium: 25
- Bromine: 25
- Krypton: 23
- Rubidium: 27
- Strontium: 26
- Yttrium: 29
- Zirconium: 26
- Elements 41-50 (Niobium to Tin): 118 isotopes
- Niobium: 24
- Molybdenum: 21
- Technetium: 28
- Ruthenium: 25
- Rhodium: 23
- Palladium: 25
- Silver: 20
- Cadmium: 26
- Indium: 28
- Tin: 38
- Elements 51-60 (Antimony to Neodymium): 113 isotopes
- Antimony: 22
- Tellurium: 22
- Iodine: 25
- Xenon: 28
- Cesium: 27
- Barium: 26
- Lanthanum: 23
- Cerium: 22
- Praseodymium: 19
- Neodymium: 22
- Elements 61-70 (Promethium to Ytterbium): 115 isotopes
- Promethium: 20
- Samarium: 19
- Europium: 21
- Gadolinium: 21
- Terbium: 19
- Dysprosium: 21
- Holmium: 20
- Erbium: 20
- Thulium: 21
- Ytterbium: 22
- Elements 71-80 (Lutetium to Mercury): 139 isotopes
- Lutetium: 25
- Hafnium: 24
- Tantalum: 26
- Tungsten: 23
- Rhenium: 25
- Osmium: 24
- Iridium: 28
- Platinum: 29
- Gold: 26
- Mercury: 29
- Elements 81-90 (Thallium to Thorium): 122 isotopes
- Thallium: 20
- Lead: 24
- Bismuth: 21
- Polonium: 22
- Astatine: 21
- Radon: 21
- Francium: 25
- Radium: 24
- Actinium: 24
- Thorium: 28
- Elements 91-100 (Protactinium to Fermium): 105 isotopes
- Protactinium: 20
- Uranium: 20
- Neptunium: 17
- Plutonium: 17
- Americium: 15
- Curium: 16
- Berkelium: 15
- Californium: 15
- Einsteinium: 15
- Fermium: 18
- Elements 101-110 (Mendelevium to Darmstadtium): 76 isotopes
- Mendelevium: 17
- Nobelium: 12
- Lawrencium: 10
- Rutherfordium: 11
- Dubnium: 11
- Seaborgium: 10
- Bohrium: 9
- Hassium: 8
- Meitnerium: 6
- Darmstadtium: 12
- Elements 111-118 (Roentgenium to Oganesson): 28 isotopes
- Roentgenium: 6
- Copernicium: 7
- Nihonium: 6
- Flerovium: 8
- Moscovium: 6
- Livermorium: 4
- Tennessine: 1
- Oganesson: 1
The total count of all isotopes for all 118 elements is 965. This number includes both stable and unstable (radioactive) isotopes.