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If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices.Nuclear techniques are increasingly used in science, industry and environmental management.Thorium is weakly radioactive: all of its known isotopes are unstable.Thorium-232 (Th), which has 142 neutrons, is the most stable isotope of thorium and accounts for nearly all natural thorium, with six other natural isotopes occurring only as trace radioisotopes.Thorium was once commonly used as the light source in gas mantles and as an alloying material, but these applications have declined due to concerns about its radioactivity.Because of the distortions and lies spread by fundamentalists about scientific dating there is a need for a centralized source of information on the topic.A few examples of such lies are presented at the very bottom of this page.For each dating or chronological method there is a link in the box at right to take you to that section of this page.

Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide.

The actinide series derives its name from the first element in the series, actinium.

The informal chemical symbol An is used in general discussions of actinide chemistry to refer to any actinide.

All actinides are radioactive and release energy upon radioactive decay; naturally occurring uranium and thorium, and synthetically produced plutonium are the most abundant actinides on Earth.

Thorium is a chemical element with symbol Th and atomic number 90.

A radioactive actinide metal, thorium is one of only two significantly radioactive elements that still occur naturally in large quantities as a primordial element (the other being uranium).

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