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Thorium reacts with hydrogen to form the thorium hydrides ThH 2 and Th 4 H 15, the latter of which is superconducting below the transition temperature of 7.5–8 K; at standard temperature and pressure, it conducts electricity like a metal. [12] Thorium is the only metallic element that readily forms a hydride higher than MH 3. [31]
Despite thorium's position in the f-block of the periodic table, it has an anomalous [Rn]6d 2 7s 2 electron configuration in the ground state, as the 5f and 6d subshells in the early actinides are very close in energy, even more so than the 4f and 5d subshells of the lanthanides: thorium's 6d subshells are lower in energy than its 5f subshells ...
For each atom the subshells are given first in concise form, then with all subshells written out, followed by the number of electrons per shell. For phosphorus (element 15) as an example, the concise form is [Ne] 3s 2 3p 3 .
For example, the first (K) shell has one subshell, called 1s; the second (L) shell has two subshells, called 2s and 2p; the third shell has 3s, 3p, and 3d; the fourth shell has 4s, 4p, 4d and 4f; the fifth shell has 5s, 5p, 5d, and 5f and can theoretically hold more in the 5g subshell that is not occupied in the ground-state electron ...
NEW YORK (Reuters) -Thorne HealthTech Inc, a provider of at-home health tests and nutritional supplements, is exploring a sale, according to people familiar with the matter. The New York-based ...
These products are purportedly infused with minerals that generate negative ions and are marketed as having health benefits or as a means of improving emotional well-being. The U.S. Nuclear Regulatory Commission and various state agencies have cautioned that such products may contain radioactive material such as uranium and thorium to produce ...
They are commonly found in several household products, including food packaging, toothbrushes, cosmetics, car parts, tools, and toys. One study found a link between phthalates and wheezing and eczema.
[1] [2] Auergesellschaft used thorium and rare-earth elements in making industrial products including mantles for gas lanterns; the toothpaste was produced as a byproduct. [1] Its radioactive content was promoted as imparting health benefits, including antibacterial action and a contribution to strengthening the "defenses of teeth and gums".