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An isotope a type of neutral atom but the number of neutrons is different from the number of protons in the nucleus. May be radioactive.

Contents 1 Elements 1-15 1.1 Hydrogen 1.2 Helium 1.3 Lithium 1.4 Beryllium 1.5 Boron 1.6 Carbon 1.7 Nitrogen 1.8 Oxygen 1.9 Fluorine 1.10 Neon 1.11 Sodium 1.12 Magnesium 1.13 Aluminium 1.14 Silicon 1.15 Phosphorus 2 Elements 16-30 2.1 Sulfur 2.2 Chlorine 2.3 Argon 2.4 Potassium 2.5 Calcium 2.6 Scandium 2.7 Titanium 2.8 Vanadium 2.9 Chromium 2.10 Manganese 2.11 Iron 2.12 Cobalt 2.13 Nickel 2.14 Copper 2.15 Zinc 3 Elements 31-45 3.1 Gallium 3.2 Germanium 3.3 Arsenic 3.4 Selenium 3.5 Bromine 3.6 Krypton 3.7 Rubidium 3.8 Strontium 3.9 Zirconium 3.10 Niobium 3.11 Molybdenum 3.12 Technetium 3.13 Ruthenium 3.14 Rhodium 4 Elements 46-60 4.1 Palladium 4.2 Silver 4.3 Cadmium 4.4 Indium 4.5 Tin 4.6 Antimony 4.7 Tellurium 4.8 Iodine 4.9 Xenon 4.10 Caesium 4.11 Barium 4.12 Lanthanum 4.13 Cerium 4.14 Iridium 4.15 Praseodymium 4.16 Neodymium 5 Elements 61-75 5.1 Promethium 5.2 Samarium 5.3 Europium 5.4 Gadolinium 5.5 Terbium 5.6 Dysprosium 5.7 Holmium 5.8 Erbium 5.9 Thulium 5.10 Ytterbium 5.11 Lutetium 5.12 Hafnium 5.13 Tantalum 5.14 Tungsten 5.15 Rhenium 6 Elements 76-90 6.1 Osmium 6.2 Iridium 6.3 Platinum 6.4 Gold 6.5 Mercury 6.6 Thallium 6.7 Lead 6.8 Bismuth 6.9 Polonium 6.10 Astatine 6.11 Radon 6.12 Francium 6.13 Radium 6.14 Actinium 6.15 Thorium 7 Elements 91-105 7.1 Protactinium 7.2 Uranium 7.3 Neptunium 7.4 Plutonium 7.5 Americium 7.6 Curium 7.7 Berkelium 7.8 Californium 7.9 Einsteinium 7.10 Fermium 7.11 Mendelevium 7.12 Nobelium 7.13 Lawrencium 7.14 Rutherfordium 7.15 Dubnium 8 Elements 106-118 8.1 Seaborgium 8.2 Bohrium 8.3 Hassium 8.4 Meitnerium 8.5 Darmstadtium 8.6 Roentgenium 8.7 Ununbium 8.8 Ununtrium 8.9 Ununquadium 8.10 Ununpentium 8.11 Ununhexium 8.12 Ununseptium 8.13 Ununoctium

Main article: Isotopes of hydrogen

Hydrogen-1 Hydrogen-2 Hydrogen-3 Hydrogen-4 Hydrogen-5 Hydrogen-6 Hydrogen-7

Main article: Isotopes of helium

Helium-2 Helium-3 Helium-4 Helium-5 Helium-6 Helium-7 Helium-8 Helium-9 Helium-10

Main article: Isotopes of lithium

Lithium-6 Lithium-7

Main article: Isotopes of beryllium

Beryllium-9

Main article: Isotopes of boron

Boron-10 Boron-11

Main article: Isotopes of carbon

Carbon-12 Carbon-13 Carbon-14

Main article: Isotopes of nitrogen

Nitrogen-13 Nitrogen-14

Main article: Isotopes of oxygen

Oxygen-16 Oxygen-18

Main article: Isotopes of fluorine

Main article: Isotopes of neon

Main article: Isotopes of sodium

Sodium-23

Main article: Isotopes of magnesium

Main article: Isotopes of aluminium

Main article: Isotopes of silicon

Main article: Isotopes of phosphorus

Main article: Isotopes of sulfur

Main article: Isotopes of chlorine

Main article: Isotopes of argon

Main article: Isotopes of potassium

Main article: Isotopes of calcium

Main article: Isotopes of scandium

Main article: Isotopes of titanium

Main article: Isotopes of vanadium

Main article: Isotopes of chromium

Main article: Isotopes of manganese

Main article: Isotopes of iron

Main article: Isotopes of cobalt

Main article: Isotopes of nickel

Main article: Isotopes of copper

Main article: Isotopes of zinc

Main article: Isotopes of gallium

Main article: Isotopes of germanium

Main article: Isotopes of arsenic

Main article: Isotopes of selenium

Main article: Isotopes of bromine

Main article: Isotopes of krypton

Main article: Isotopes of rubidium

Main article: Isotopes of strontium

Main article: Isotopes of zirconium

Main article: Isotopes of niobium

Main article: Isotopes of molybdenum

Main article: Isotopes of technetium

Main article: Isotopes of ruthenium

Main article: Isotopes of rhodium

Main article: Isotopes of palladium

Main article: Isotopes of silver

Main article: Isotopes of cadmium

Main article: Isotopes of indium

Main article: Isotopes of tin

Main article: Isotopes of antimony

Main article: Isotopes of tellurium

Main article: Isotopes of iodine

Main article: Isotopes of xenon

Main article: Isotopes of caesium

Main article: Isotopes of barium

Main article: Isotopes of lanthanum

Main article: Isotopes of cerium

Main article: Isotopes of iridium

Main article: Isotopes of praseodymium

Main article: Isotopes of neodymium

Main article: Isotopes of promethium

Main article: Isotopes of samarium

Main article: Isotopes of europium

Main article: Isotopes of gadolinium

Main article: Isotopes of terbium

Main article: Isotopes of dysprosium

Main article: Isotopes of holmium

Main article: Isotopes of erbium

Main article: Isotopes of thulium

Main article: Isotopes of ytterbium

Main article: Isotopes of lutetium

Main article: Isotopes of hafnium

Main article: Isotopes of tantalum

Main article: Isotopes of tungsten

Main article: Isotopes of rhenium

Main article: Isotopes of osmium

Main article: Isotopes of iridium

Main article: Isotopes of platinum

Main article: Isotopes of gold

Main article: Isotopes of mercury

Main article: Isotopes of thallium

Main article: Isotopes of lead

Main article: Isotopes of bismuth

Main article: Isotopes of polonium

Main article: Isotopes of astatine

Main article: Isotopes of radon

Main article: Isotopes of francium

Main article: Isotopes of radium

Main article: Isotopes of actinium

Main article: Isotopes of thorium

Main article: Isotopes of protactinium

Main article: Isotopes of uranium

Uranium-233 Uranium-234 Uranium-235 Uranium-238

Main article: Isotopes of neptunium

Main article: Isotopes of plutonium

Main article: Isotopes of americium

Main article: Isotopes of curium

Main article: Isotopes of berkelium

Main article: Isotopes of californium

Main article: Isotopes of einsteinium

Main article: Isotopes of fermium

Main article: Isotopes of mendelevium

Main article: Isotopes of nobelium

Main article: Isotopes of lawrencium

Main article: Isotopes of rutherfordium

Main article: Isotopes of dubnium

Main article: Isotopes of seaborgium

Main article: Isotopes of bohrium

Main article: Isotopes of hassium

Main article: Isotopes of meitnerium

Main article: Isotopes of darmstadtium

Main article: Isotopes of roentgenium

Main article: Isotopes of ununbium

Main article: Isotopes of ununtrium

Main article: Isotopes of ununquadium

Main article: Isotopes of ununpentium

Main article: Isotopes of ununhexium

Main article: Isotopes of ununseptium

Main article: Isotopes of ununoctium