What is the fastest decaying element?

Answer 1

Many elements decay fast. All the elements after 92 are man made and decay, and all the ones over 104 decay rapidly, some with a half-life in the millionths of a second.

Element 118, ununoctium, has a half-life of 0.89 mili-seconds.

Answer 2

Different unstable isotopes of different elements have different decay modes and different rates of decay. That said, we have to look around to find the one that has the shortest half-life.

All elements have an isotope or isotopes that are unstable. Note that these unstable isotopes may be naturally occurring or may be synthetic, but they exist. This creates some competition for the honor of the radionuclide with the shortest half-life. There are some isotopes of elements throughout the Periodic Table that have been synthesized that have extremely short half-lives, but we'll probably find the shortest-lived nuclides among the heaviest synthetic elements at the extreme upper end of the periodic table. These ultra-heavy elements have isotopes that have half-lives in the range of tiny fractions of a second.

Answer 3

We don't really know, as we don't know every element and every isotope. Ununoctium (element 118) has a half life of .9ms (+/- .3ms).

unh-292 (an isotope of ununhexium) has an estimated half life of .6ms, while the unh-291 (the most stable form of ununhexium) has a half life of only 18ms.

Most of our knowledge of these atoms is based on limited date, since in production, only a handful of atoms are produced and they decay extremely quickly.

Answer 4

Generally isotopes of transfermium family elements (elements with atomic numbers between 101 and 118) are extremely unstable.

But many isotopes have very short half lives. Generally speaking, the further an isotope is from the line of stability in the chart of the nuclides, the shorter its half life will be.

Answer 5

Francium-223 is considered to be the fastest decaying element with a half-life of only 22 minutes.

Answer 6

Generally isotopes of transfermium family elements (elements with atomic numbers between 101 and 118) are extremely unstable.

But many isotopes have very short half lives.

Answer 7

An unstable element that decays very quickly would be Uuq. All three Uuq isotopes that have been made have undergone spontaneous fission in the first .0012 milliseconds.

Answer 8

Some isotopes of radioactive elements, especially after Americium, decay in micro seconds.

Answer 9

None. Though some particles have an extremely short life.

Answer 10

francium