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When do Radioactive decays occur when atoms of some elements...?
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What are the names of the elements that have atoms too large and unstable to occur naturally?
These are the artificial radioactive chemical elements.
What must occur before a radioactive atoms ceases to undergo further radioactive decay?
A stable, nonradioactive atom must be formed.
When a compound forms from elements changes occur in a way that the atoms are?
Rearranged
Why does the periodic table has over 110 elements when only 90 occur on earth?
The higher atomic number elements are radioactive and have long since decayed away (assuming they were here to start with).
Is is possible to convert atoms of one element into atoms of another?
According to Dalton's atomic theory chemical reactions occur when atoms are separated, joined, or rearranged. Atoms of one element, however, are never changed into atoms of another element as a result of a chemical reaction (it is possible only during nuclear reactions and radioactive disintegration).
What are the names of the elements that have atoms too large and unstable to occur naturally?
These are the artificial radioactive chemical elements.
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 must occur before a radioactive atoms ceases to undergo further radioactive decay?
A stable, nonradioactive atom must be formed.
Why are most elements radioactive?
Most of the natural occurring (isotopes of) elements are NOT radioactive.Though most of all the known isotopes are radioactive but most of them do NOT naturally occur.
What kind of rock in which radioactive elements occur naturally?
Pitchblende uranium ore UO2
When a compound forms from elements changes occur in a way that the atoms are?
Rearranged
Why does covalent bonding between atoms occur?
Because energetically, it is favoured over the elements existing as separate atoms.
When a compound forms from elements changes occur in the way that the atoms are whatr?
Tea
Does all radioactive substances are manmade or artificial?
Radioactive elements both occur in nature (Uranium is the prime example) and are made through the works of man (Plutonium is man-made).
When two elements are mixed to form a compound how does this occur?
Electrons are shared or swapped between atoms.
Do all radioactive isotopes follow the half-life single rate or are there those that decay at multiple rates throughout their decay?
In general, a radioactive substance decays at a constant rate throughout time. That is not to say that the same number of decays occur per unit time. They cannot, and this is because the sample is shrinking as radioactive decay "claims" more and more of it. The decays per second is decreasing. But the rate of decay remains constant. There are some instances where slight changes in decay rates of a couple of different radioactive substances occur when we put them in extreme magnetic fields. But, by and large, the decay rates of radionuclides are constant. Additionally, we've gone to great lengths in an attempt to induce changes in the decay rates of a number of radionuclides, but they've proved themselves sublimely resistant to any manipulation by the likes of us, even as clever as we are.
Who believed elements have their own atom?
Dalton, who got the idea from Democritis. Dalton turned this idea into a scientific theory which was All elements are composed of indivisible particles called atoms, Atoms of all elements are different from one another, Atoms of elements can mix together in whole number ratios to form compunds, and Chemical reactions occur as a result of when atoms are separated, joined, or rearranged.
