Each (unstable) isotope has a distinctive half-life.
Each isotope of uranium has its half life. See the link below.
Isotope A
The half-life of a radioactive isotope is the amount of time it takes for one-half of the radioactive isotope to decay. The half-life of a specific radioactive isotope is constant; it is unaffected by conditions and is independent of the initial amount of that isotope.
No, the half-life of a radioactive isotope does not decrease as the isotope decays. That half-life remains constant. It's the amount of the substance that decreases as the isotope decays.
The half life of an isotope refers to the rate at which a radioactive isotope undergoes radioactive decay. Specifically, it is the amount of time it takes for half of a given sample of a radioactive isotope to decay.
It tells how long it takes for a radioactive isotope to become a daughter element.
Several elements have known isotopes with mass number 34:34Ne - an isotope of neon with half-life >1.5 µs34Na - an isotope of sodium with half-life 5.5 ms34Mg - an isotope of magnesium with half-life 20 ms34Al - an isotope of aluminum with half-life 56.3 ms34Si - an isotope of silicon with half-life 2.77 s34P - an isotope of phosphorous with half-life 12.43 s34S - a stable isotope of sulfur34Cl - an isotope of chlorine with half-life 1.5264 s34Ar - an isotope of argon with half-life 844.5 ms34K - an isotope of potassium with half life
The type of isotope
It depends if it is an isotope or not
This is called the "half-life" of the isotope.
The half-life of the isotope is 12.3.
The length of time depends on the element and isotope, but the point at which half of the sample has decayed is known as the half-life.