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Isotopes
Isotopes are atoms that have different number of neutrons, so they have a different mass number than the other atoms in an element.
1,075 Questions
What mineral is probably the source for radioactive isotopes derived from nuclear reactors?
uranium is probably the source for radioactive isotopes derived from nuclear reactors
How does polonium 210 become lead 206?
Polonium-210 become lead-206 after the emission of an alpha particle.
What is the difference of isotopes of fluoride 18 different from fluoride 19?
Fluorine 19 has one neutron more than F18.
An isotope is an atom that has an irregular number of neutrons in its nucleus. Since it has the same number of protons as a normal atom, they still have the same chemical properties and are still technically the same thing, but since the atomic weight is different they have slightly different physical properties.
Unstable isotopes are radioactive isotopes, can disintegrate and emit radiations.
How are isotopes used to keep food from spoiling?
Typically, dehydration and irradiation. The causes of most food spoilage is the growth of bacteria in the moist environment of the food. Irradiation can kill all the bacteria, so as long as the package is sealed, no bacteria can grow there. And dehydration removes most of the water from the food so that it takes up less space and weight, and stays edible for longer times.
How many neutrons does an atom of flerovium have it its nucleus?
For each isotope of Fl the number of neutrons is different (the number of neutrons is between 170 and 175).
Number of neutrons = Mass number of an Fl isotope - 114
What number do all the isotopes of carbon has in common and what does that number represent?
The number of protons (the same as atomic number) is specific for all isotopes.
When an isotope is blank it does not undergo radioactive decay?
When an isotope is stable, it does not undergo radioactive decay. Stable isotopes have a balanced number of protons and neutrons in the nucleus, which prevents them from spontaneously changing into another element over time.
Which isotope is used in myocardial perfusion tests?
There are several, but Thallous chloride (thallium-201) is one.
What determines the difference between isotopes of C-12m C-13 and 14?
These isotopes have a different number of neutrons.
An isomer C-12m doesn't exist; the isotope is C-12.
How much of a g sample of thorium 234 will be unchanged after 48.2 days?
After 48,2 days the amount of Th-234 will be 25 g.
What are the purposes of isotope labeling?
Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. Isotope Variation Analysis (detection of adulteration in food products or the geographic origins of products using isoscapes) and Isotopic substitution (to determine the mechanism of a chemical reaction via the kinetic isotope effect) are the most frequently used application for isotopes. Another common application for isotope is isotopic labeling, the use of unusual isotopes as tracers or markers in chemical reactions. Normally, atoms of a given element are indistinguishable from each other. However, by using isotopes of different masses, even different nonradioactive stable isotopes can be distinguished by mass spectrometry or infrared spectroscopy. For example, in 'stable isotope labeling with amino acids in cell culture (SILAC)' stable isotopes are used to quantify proteins. If radioactive isotopes are used, they can be detected by the radiation they emit (this is called radioisotopic labeling).
Why are isotope's not considered different elements?
Isotopes are not different elements, because they have the SAME chemical properties; the only difference is in mass. When you breathe in air, your body doesn't care - and couldn't tell - the difference between two different isotopes of oxygen or nitrogen.
But oxygen-16 burns just like oxygen-18, and carbon-12 tastes just like carbon-14.
In fact, the prefix "iso" even MEANS "same". So we consider them the same element.
Number of protons is the only thing that decide what element an atoms is. Number of electrons and neutrons only determine properties, weight, and reactivity.
How are isotopes of hydrogen same?
All hydrogen isotopes have a proton and an electron; the number of neutrons is different.
How do the isotopes of fluorine 18 and fluorine 19 differ?
- one neutron
- fluorine-18 is radioactive undergoing beta+ decay with a halflife of 1.87 hours
- fluorine-19 is the only stable isotope of fluorine
- being slightly lighter, fluorine-18 will participate slightly faster in chemical reactions than fluorine-19 will
- etc.
What is the notation that indicates the thorium isotope?
After the IUPAC rule: 232Th, etc.
Also used: Th-232, thorium-232
The most common isotope of carbon is carbon-12.
The most common isotope of carbon is carbon-12.
The most common isotope of carbon is carbon-12.
The most common isotope of carbon is carbon-12.
What is titanium's atomic mass number of the most common isotope?
The mass number of the most common titanium isotope is 48.
If a hydrogen has 2 neutrons is it an isotope?
The number of neutrons in hydrogen depends on the isotope. Protium,deuteriumand tritium have 0, 1 and 2 neutrons respectively.
What are the two medical applications of radioisotopes?
- radiodiagnostic
- treatment with radioisotopes
How many minute will it take for 1gram of francium isotope to decay to 0.125gram?
Each isotope has another half life.
For the isotope francium-223 (half life = 21,8 minutes) the time is 87,2 minutes.
Yes 112Cd is an isotope of cadmium, called cadmium-112, which contains 48 protons and 64 neutrons. Cadmium-112 has a mass number of 112, which is the sum of the protons and neutrons in the atomic nuclei of the atoms of this isotope.
