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Radioactive elements are ones that have too many or two few protons and/or neutrons to achieve stability. For any normally stable isotope, adding or removing neutrons will make a different isotope, and can easily result in an unstable nucleus.
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Radioactivity is a tendency for an element or a material to?
To disintegrate. That is, some of the atoms in a sample will disintegrate over time.
Daltons atomic therory?
In the 1800s John Dalton did some experiments and these are some of his magnificent work: * all elements are composed of atoms. atoms can not be divided or destroyed * atoms of the same element are alike * .atoms of different elements are not alike * the atoms of two or more elements can join together to form compounds
Does an atomic bomb release radioactivity?
Yes, atomic bombs are made with chemicals and elements that contain radio-activity.
What are examples of radioactivity?
For example natural and artificial radioactivity.
What are Henri Becquerel and the Curies famous for?
inventing the radium and poionium
Are radio active elements self substaining?
It depends on what you mean. If you mean, are they able to sustain radioactivity by themselves forever then, no. The radioactivity is a result of the breakdown of atoms in these elements into other atoms, fragments of atoms and various forms of energy. So when the supply of atoms capable of breaking down eliminates itself the radioactivity ceases.
What is the elements in chemistry?
Atoms of chemical elements are non destructible by chemical methods. Characteristic is the number of protons.
Why does radioactivity occur in some elements?
It occurs due to the instability of the element. It is a spontaneous process. Radioactive atoms are known as isotopes.
What is happening in flame test lab?
Due to electron transitions in atoms some chemical elements emit a characteristic colored flame.
What characteristic of carbon atoms allows the formations of compounds?
Carbon can atoms can form four covalent bonds with many, many different elements.
What are all the characteristics properties of elements?
One of the characteristic properties of an element is that consists of atoms that has the same number of protons. The other characteristic is that it has a distinctive atomic number. The last characteristic is that it cannot be decomposed in the chemical reaction.
How many invention did maria curie invent?
She discovered radioactivity and 2 elements, polonium and radium.
What are the elements of radioactivity?
Some of the elements on the Periodic Table are Radioactive. This means that their nuclei decay to form other elements in a decay chain. There are currently 33 known radioactive elements of which 20 are currently produced synthetically.
What is radioactivity number?
There is no such thing. There are elements with isotopes that have different atomic weights and these decay [radioactively] into daughter elements which will also have a range of atomic weights. There is also the half-life, which is a measure of the time before half the atoms in a lump of a substance have decayed.
What woman helped in the understanding of elements and radioactivity?
Mme. Curie.
How does artificial transmutation differ from artificial radioactivity?
"Artificial transmutation" is a nuclear reaction induced in laboratory, its man made. Artificial radioactivity is a radioactive disintegration phenomenon supported by artificial isotopes.
Why are atoms and elements alike?
Because the differences in atoms make different elements. Elements are multiple of similar atoms.
