Is tungsten toxic

Answer 1

Naturally occurring tungsten consists of five isotopes whose half lives are so long that they can be considered stable. Theoretically, all five can decay into isotopes of element 72 (hafnium) by alpha emission, but only 180W has been observed to do so with a half life of (1.8 ± 0.2)·1018 yr; on average, this yields about two alpha decays of 180W in one gram of natural tungsten per year. The other naturally occurring isotopes have not been observed to decay, constraining their half-lives to be:

182W, T1/2 > 8.3·1018 years 183W, T1/2 > 29·1018 years 184W, T1/2 > 13·1018 years 186W, T1/2 > 27·1018 years

Answer 2

Tungsten is a non-reactive metal.

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Having an electronegativity of 2,36 (after Pauling tables) wolfram (tungsten) is not a metal too reactive; but it is not unreactive.

Answer 3

No, they are very hard and extremely durable though, and they make for a great guys wedding band

Tungsten which as a Industrial Metal for drills and so on may content so harmness or radioactive element, such like Cobalt. But the tungsten ring made for jewelry must not content any harmness element. They should be follow the EU standard safe and hypoallergenic for you.

According to recent research, all five naturally occurring isotopes of tungsten can decay into isotopes of element 72 (hafnium) by alpha emission, but only 180W has been observed to do so with a half-life of (1.8 ± 0.2)×1018 yr; on average, this yields about two alpha decays of 180W in one gram of natural tungsten per year. The other naturally occurring isotopes have been observed to decay, although the half lives are not measured.

The theoretical calculations put their half-lives to be

182W, T1/2 > 8.3×1018 years 183W, T1/2 > 29×1018 years184W, T1/2 > 13×1018 years186W, T1/2 > 27×1018 years

Answer 4

All of the thulium ordinarily found in nature is of a single stable isotope. Like all other elements, thulium has synthetic radioactive isotopes.

Answer 5

Tungsten is a natural chemical element; but tungsten has natural and artificial isotopes.

Answer 6

According to the Wikipedia article, "Tungsten interferes with molybdenum and copper metabolism, and is somewhat toxic to animal life."