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actinides click to hear : actinides

Radioactive elements that are abundant in nature (elements 89 to 92) or made artificially (elements 93 to 103). Most of them have no industrial applications.
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See actinides in : french | spanish
lawrencium nobelium mendelevium fermium einsteinium californium berkelium curium americium plutonium neptunium uranium protactinium thorium actinium

lawrencium click to hear : lawrencium

Metal that is produced from californium; it is used for scientific research only.

nobelium click to hear : nobelium

Metal that is produced from curium; it is named in honor of Alfred Nobel (inventor of dynamite and founder of the Nobel Prize).

mendelevium click to hear : mendelevium

Metal that is produced from einsteinium; it is named in honor of the chemist Mendeleyev (who classified the elements).

fermium click to hear : fermium

Metal that was discovered at the same time as einsteinium; it is used for scientific research only.

einsteinium click to hear : einsteinium

Metal that was discovered in 1952 among the debris of the first thermonuclear explosion in the Pacific; it is used for scientific research only.

californium click to hear : californium

Metal produced from curium that is used especially in the treatment of cancer and in some measuring instruments such as humidistats.

berkelium click to hear : berkelium

Metal that is produced in small amounts from americium; it is used for scientific research only.

curium click to hear : curium

Metal that is produced in small amounts from plutonium; it is used especially in thermoelectric generators for spacecraft propulsion.

americium click to hear : americium

Metal that is produced from plutonium; it is used mainly in smoke detectors and in radiology.

plutonium click to hear : plutonium

Metal that is produced from uranium; it is used especially as fuel in nuclear reactors as well as in nuclear weapons.

neptunium click to hear : neptunium

Rare metal that is produced from uranium; it is used in neutron-detection instruments.

uranium click to hear : uranium

Naturally abundant metal that is used mainly as fuel in nuclear reactors as well as in nuclear weapons.

protactinium click to hear : protactinium

Very rare metal that is present in uranium ore; it has few applications outside of scientific research.

thorium click to hear : thorium

Natural metal that is used especially in alloys, photoelectric cells and uranium production.

actinium click to hear : actinium

Metal that is present in small quantities in uranium ore; it is used mainly as a source of neutrons in nuclear reactors.