What does PM mean in CHEMISTRY
Pm is an abbreviation used to represent the chemical element Proactinium. It is a naturally-occurring radioactive metal and was discovered in the early 1900s. As a heavy element, it has many applications in various industries, such as nuclear power generation and medical imaging technology. It can also be found in trace amounts in many types of ore deposits around the world.
Pm meaning in Chemistry in Academic & Science
Pm mostly used in an acronym Chemistry in Category Academic & Science that means proactinium
Shorthand: Pm,
Full Form: proactinium
For more information of "proactinium", see the section below.
What Pm Stands for
Pm stands for Proactinium, which is a chemical element that falls within Period 7 of the Periodic Table of Elements. Its symbol is Pa and its atomic number is 91, making it one of the heaviest elements currently known to man. Proactinium is a naturally occurring radioactive metal and was first isolated by Lise Meitner and Otto Hahn from pitchblende ore in 1917. It has numerous industrial uses, primarily in nuclear power plants and medical imaging equipment.
Uses Of Pm
Proactinium is primarily used as a fuel source for nuclear reactors due to its relatively high energy density when compared with other elements such as uranium or plutonium. In addition, it can be used as an initiator material for neutron irradiation research experiments and also as a radiation source for medical imaging devices such as CT scans and PET scans. Another use of proactinium involves its application in calibration standards for gas flow meters. Proactinium oxides are also occasionally used as catalysts to produce nitric acid and ammonia from air according to the Haber-Bosch process.
Essential Questions and Answers on proactinium in "SCIENCE»CHEMISTRY"
What is Proactinium?
Proactinium (Pm) is a chemical element in the periodic table that has the symbol Pm and atomic number 91. It is an actinide metal of silvery-gray appearance that decomposes readily in water, and is found naturally in uranium ores.
What are the common uses of Proactinium?
Proactinium has no stable isotopes and it does not have any commercial applications. It is a rare element, so its main use is for research purposes as a beta-emitting source for radiotherapy, nuclear fuel, and neutron sources.
Is Proactinium radioactive?
Yes, proactinium is radioactive but with a very low activity rate. It decays to form different isotopes of uranium due to its short half-life of just over two minutes.
How long does it take for Proactinium to decay?
The half-life of proactinium is 2.6 minutes, meaning it takes 2.6 minutes for half of the atoms to decay into other elements or lighter particles such as alpha particles or electrons. After 10 half-lives or 26 minutes all of the proactinium will be gone from the sample.
What kind of radiation does Proactinium emit?
Proactinum emits beta radiation which comes from electrons released during the decay process. This type of radiation can penetrate deep into materials such as plastics and living tissue and cause damage when absorbed by molecules.
Is Proctainum safe to handle?
Due to its low energy level, proctainum is considered relatively safe to handle although special precautions should be taken when working with high concentrations of this material since prolonged exposure may cause health risks.
Can Proctainum be used as a fuel source?
No, proctainum cannot be used as a fuel source due to its short half-life and lack of commercially useful applications. Furthermore, since it emits harmful radiation when decaying, it would not be suitable for use as a fuel source.
Are there any medical uses for Proctainum?
Yes, proctainum can be used in medicine due to its beta radiation emission which makes it useful in treating certain types cancerous tumors by killing cancer cells directly while leaving healthy cells unharmed.
Final Words:
In summary, Pm stands for proactinium which is a naturally occurring radioactive metal discovered in the early 1900s by Lise Meitner and Otto Hahn from pitchblende ore samples. Due its relatively high energy density, proactinium can be found in various industrial uses such as nuclear power generation, neutron irradiation experiments, medical imaging devices like CT scans and PET scans, flow meter calibration standards and even catalysts producing nitric acid and ammonia according to the Haber-Bosch process.
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