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- sources of energy
- sources of penetrant radiations
- smoke detectors
- uses in medicine
- uses as radioactive tracers
- uses in radioactive dating of rocks
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Which group contains only radioactive elements?
The actinoids (formerly actinides) are all unstable metallic elements. The period 7 elements with atomic numbers from 89 (actinium, for which the group is named) through 103 comprise these elements. A link can be found below.
What are some practical uses for elements in the halogens?
There are 5 practicals that use elements in the halogens. The five practicals are fluorine, chlorine, bromine, iodine, and astatine.
What are the first 5 elements by atomic number for which all isotopes are radioactive?
43 Technetium, and 61 Promethium have no stable isotopes. All elements starting at 83 Bismuth have only radioactive isotopes; though Bismuth-209 has such a long half-life that it can be considered stable for any practical purpose.
What are the names of the isotopes in Platinum?
They do not combine with or interact with most other elements or compounds. ... radioactive. No radioactive isotope of platinum has any commercial application.
What is dubnium?
Dubnium is an artificial chemical element, atomic number 105, radioactive, very probably a solid metal, group 5 in the periodic table of elements.
What is the range of half-lives of different radioactive element?
It would be quite difficult to list all radioactive elements and their half lives in this area. Lithium 5 has a half life of about a trillionth of a second. Uranium 238 has a half life of about 4.7 billion years. Since the world is about 4.2 billion years, over half the Uranium 238 is still around. The first element in the Periodic Table, Hydrogen, has a radioactive form, Hydrogen 3. It has a half life of about Twelve and a half years. Helium has a radioactive form, Helium 5. It's half life is a trillionth of a second. Then you get to elements with different radioactive isotopes. You will need to look them up in a handbook. Tin is the element with the most isotopes.
How Many Radioactive Elements Are Made in the Laboratory?
About 28 elements were discovered in the laboratory. But after the man made preparation some elements were discovered also in nature in very extremely traces: Pm, Tc, Pu, Np, Am, Cm, Bk.
What is the family name of for Technetium?
Transition metals. in fact, it is the Only radioactive transition metal!
What are 4 names of elements names after elements?
1.safe drinking water 2.low level of noise 3.clean air 4.sanitary surrounding 5.low leve of radioactive radiation 6.Accident hazards in homes and neighbourhood.
How many subsets of three elements each can be made from a set of five elements?
(5 x 4 x 3)/(3 x 2) = 10
Why is the number 5 important in Chinese music?
· There are 5 elements: Water, Fire, Earth, Wind, and Metal. · The Tiananmen gate has 5 arches. · The Chinese dragon has 5 claws. · In music, it uses the pentatonic scale (5 notes).
What is level 5 Xgerms?
radioactive germs level
