Meitnerium's most stable isotope, meitnerium-278 , has a half-life of about 8 seconds.
What has a half-life of 8 seconds?
The element with a half-life of only eight seconds is meitnerium . More precisely, it is the meitnerium-278 isotope that has a half-life of eight...
What element has the shortest half-life?
Uranium-234 has the shortest half-life of them all at 245,500 years, but it occurs only indirectly from the decay of U-238. In comparison, the most radioactive element is polonium. It has a half-life of a mere 138 days. Still, uranium has explosive potential, thanks to its ability to sustain a nuclear chain reaction.
Which element has longest half-life?
Bismuth-209 ( 209 Bi) is the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and a magic number of 126 neutrons, and an atomic mass of 208.9803987 amu (atomic mass units).
What is your element half-life?
When an atom undergoes radioactive decay, it loses particles. The lost particle will change the original atom into a different isotope or element, as it reduces the amount of the original element. In simpler terms, the amount of time required for an element to lose half its mass is the element's half-life.
What is considered a short half-life?
Examples of drugs with a short half-life
It has a short half-life of around 30 minutes . ... LSD (lysergic acid): An illegal hallucinogenic drug, LSD only remains in blood plasma for 2-4 hours, NHTSA reports, but a “trip” may last 6-8 hours or even longer in some cases.
How does half-life work?
A medication's biological half-life refers simply to how long it takes for half of the dose to be metabolized and eliminated from the bloodstream . Or, put another way, the half-life of a drug is the time it takes for it to be reduced by half.
Which is the rarest element on the Earth?
A team of researchers using the ISOLDE nuclear-physics facility at CERN has measured for the first time the so-called electron affinity of the chemical element astatine , the rarest naturally occurring element on Earth.
Which element is the most unstable?
Francium is one of the most unstable of the naturally occurring elements: its longest-lived isotope, francium-223, has a half-life of only 22 minutes.
Is carbon 14 a radioisotope?
carbon-14, the longest-lived radioactive isotope of carbon , whose decay allows the accurate dating of archaeological artifacts. The carbon-14 nucleus has six protons and eight neutrons, for an atomic mass of 14.
What is the most powerful radioactive element?
Polonium . Because it is a naturally-occurring element that releases a huge amount of energy, many sources cite polonium as the most radioactive element. Polonium is so radioactive it glows blue, which is caused by excitation of the gas particles by radiation.
What do you call the element from atomic number 57 71?
The elements from atomic number 57 to 71 are called Lanthanides . They are called lanthanides, since lanthanum is chemically identical to the elements in the sequence. ... The lanthanides are between Barium and Hafnium.
What is the heaviest isotope?
The heaviest element that occurs in large quantity is uranium (atomic number 92). You can mine it like gold.
What element lasts less than a second?
Two new elements are named on the Periodic Table – even though they've only ever existed for less than a second. They have only ever existed for less than a second, but two new elements were named yesterday – Flerovium and Livermorium .
What occurs during half-life?
What occurs during one half-life? Half of a daughter isotope undergoes radioactive decay to form a parent isotope . Half of a parent isotope undergoes radioactive decay to form a daughter isotope. ... All of a parent isotope undergoes radioactive decay to form a daughter isotope.
Is every element stable?
Since a nucleus with an odd number of protons is relatively less stable, odd-numbered elements tend to have fewer stable isotopes. ... In addition, no odd-numbered element has more than two stable isotopes, while every even-numbered element with stable isotopes, except for helium, beryllium, and carbon, has at least three.
