How does P-32 decay?
Phosphorus 32 (P-32) is the phosphorus isotope whose nucleus consists of 15 protons and 17 neutrons. It disintegrates by emitting a β- (1.71 MeV) particle in 32S with a half-life of 14.263 days. It is an artificial radioactive substance obtained by neutron bombardment of stable phosphorus.
How do you calculate the half-life of phosphorus-32?
The expression for the half-life of phosphorus-32 is, ta=0.693ko t a = 0.693 k o . Thus the decay constant is 4.85×10−2days−1 4.85 × 10 − 2 d a y s − 1 .
What is the decay constant of phosphorus-32?
4.86 x 10
The half-life of phosphorus-32 is 14.26 days. The decay constant is k = 4.86 x 10−2 decays/day.
What is P-32 used for?
A radioactive form of the element phosphorus. It is used in the laboratory to label DNA and proteins. It has also been used to treat a blood disorder called polycythemia vera and certain types of leukemia, but it is not commonly used anymore.
Is Phosphorus-32 Harmful?
Phosphorus-32 is an energetic beta emitter which can penetrate up to 0.8 cm into living skin tissue. Therefore, this isotope poses an external (skin) dose hazard to persons as well as a potential internal hazard.
Does phosphorus-32 occur naturally?
Phosphorus-32 (32P) is a radioactive isotope of phosphorus. Phosphorus-32 only exists in small quantities on Earth as it has a short half-life of 14 days and so decays rapidly. …
What is meant by the statement that P 32 has a half-life of 14 days?
Hint: We know that half life of a radioactive substance is the time that is needed by the isotope to react half of its initial mass. Here, half life phosphorus-32 is 14, that means, in 14 days the original mass of phosphorus-32 will be reduced to half.
How many half lives will phosphorus-32 go through in 57.2 days?
four half-lives
Unknown: mass of phosphorus-32 remaining after 57.2 days . number of half-lives that have passed in the time elapsed. Then the amount of phosphorus- 32 is determined by reducing the original amount by half for every half-life that has passed. 4 EVALUATE A period of 57.2 days is four half-lives for phosphorus-32.
What is the half-life of phosphorus 33?
25.34 days
The radioactive isotope of phosphorus with relative atomic mass 32.971725, half-life of 25.34 days and nuclear spin 1/2.
Why is phosphorus-32 used in agriculture?
Phosphorus-32 is used in plant sciences for tracking a plant’s uptake of fertiliser from the roots to the leaves. The phosphorus-32-labelled fertiliser is given to the plant hydroponically or via water in the soil and the usage of the phosphorus can be mapped from the emitted beta radiation.
What diseases does Phosphorus-32 Treat?
Radioactive phosphorus (P-32) is a type of internal radiotherapy and is a treatment for some blood disorders, such as polycythaemia vera (PV) and essential thrombocythaemia (ET).
How is phosphorus-32 created?
As basic substance we use chemically pure uncleaned sulfur. In the reactor sulfur-32 cores under neutron influence cause a reaction and as a result we obtain phosphorus-32 isotope. We can produce it from sulfur enriched with sulfur-33 isotope on the same product line. Half-life of phosphorus-33 is 25 days.
