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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
How the radioactive decay of isotopes is used to determine the age of rocks?
The amount of the remaining radioactive isotopes it contains.
What particles are isotopes of each other?
== == Atoms of the same element with different number of neutrons are called isotopes. See related links below for more information.
What is Mass Of Plutonium 239 Atom?
PlutOnium 239 is an element - plutOnium - with an atomic weight of 239.
Does the element Mercury contain isotopes?
Mercury has isotopes ranging from an atomic mass of 171 to 210. Of these, only 7 are stable and a further 5 have halflives longer than a halfday. The radioactive isotopes are: 171 to 195, 197, 205 to 210. Two of the stable isotopes also have unstable excited forms.
What is the length of time it takes for one half of the nuclei of a radioactive isotope to decay?
It can vary from tiny fractions of a second to several sextillion years.
How many neutrons are in roentgenium?
Roentgenium-272 has 161 neutrons.
Number of neutrons = Atomic mass of an isotope - Atomic number of the element
The atomic number of roentgenium is 111, but Rg has many isotopes each with a different atomic mass and number of electrons.
How are carbon-14 isotopes formed?
Carbon-14 is produced in the upper atmosphere when cosmic rays produce thermalised neutrons, by hitting atomic nuclei. If these thermalised neutrons then hits a Nitrogen neuclei it creates Carbon 14.
What is the nature of isotopes?
Isotopes have the same atomic number and different mass. This difference is due to different number of neutrons in them. That is why the mass of chlorine comes to be 35.5, a fraction.
How did humans add dangerous isotopes to the environment?
"Un-Natural" isotopes are released by open air detonation of nuclear weapons; gases escaping from nuclear reactors; improper containment and storage of radio active wastes; use of isotopes for medical treatments (very low amounts emitted). "Natural" isotopes are released by volcanic activity, open pit and deep shaft mining, geothermal springs, oceanic floor rifts, created by collision with cosmic rays, ultraviolet decomposition or chemical re-arrangement of atmospheric molecular structures, etc.
The mass effect between deuterium and the relatively light protium affects the behavior of their respective chemical bonds, by means of changing the center of gravity (reduced mass) of the atomic systems. However, for heavier elements, which have more neutrons than lighter elements, the ratio of the nuclear mass to the collective electronic mass is far greater, and the relative mass difference between isotopes is much less. - See more at: http://www.chacha.com/question/what-cases-are-differences-between-isotopes-important#sthash.oOOVoNRU.dpuf
Do isotopes have a different mass because of the number of electrons?
the differences in neutrons of the elements
What are the drawbacks of using radioactive isotopes at home or workplace?
1. Radioisotopes can expose workers to radiation. This can damage their healthy cells.
2. The disposal of radioisotopes can cause pollution problems. This causes damage to the environment.
Overall the impact is positive on society if the difficulties are monitored and controlled.
How many isotopes does magnesium Mg have?
3 tons
The mass of Earth's Lithosphere is around 1.365 x 10^23 kg, or
136 500 000 000 000 000 000 000 kg.
Of this, around 2.09% is magnesium, and therefore 2.85285 x 10^21 kg is magnesium, or
2 852 850 000 000 000 000 000 kg.
Why is neon-20 considered an isotope?
Neon-20 is considered an isotope because it has the same number of protons as the regular isotope of neon (neon-22), but a different number of neutrons. Isotopes are variations of an element that have the same number of protons but different numbers of neutrons.
Why are some isotopes rarer than others?
Some elements are rarer than others. Elements in the periodic table, up to and including iron can be produced in main sequence stars and these elements are re-distributed into space. Many of them are, therefore, relatively abundant. Elements further up the periodic table are produced in the more cataclysmic supernova explosions and so are rarer. This explains the different abundance of elements.
Isotopes can be stable or can decay in fractions of a second or over thousands of years. The decay process produces isotopes of daughter elements. So the abundance of a particular isotope depends on how stable it is, how stable its parent is and on the abundance of its parent.
What is isotopes of nitrogen relative abundance percent?
Nitrogen take up aproximately 70% of the earths lower atmosphere.
Radio pharmaceutical is a compound used in medicine that have a radioactive atom in the molecule, radio pharmaceuticals are both diagnostic purposes or for therapy.
Why is the mass in amu of a carbon -12 atom reported a 12.011 in the periodic table of the elements?
The atomic weight given on the periodic table is "average" weight of a sample of the element including it most common isotopes. Since the isotopes can have different weights, when one averages the weights, the number is a little off.
Who produced the first artificial isotope?
Madamme Curie is the first on record, that figured out what she was doing.
What is the most common isotope Br?
The most common isotope of bromine is bromine-79 (Br-79), which makes up about 51% of naturally occurring bromine.
How does isotopes of the same element chemically react?
Although chemistry usually teaches us that isotopes only differ in neutron count and not reactivity, this is not actually the case. An illustration of this can best be seen when analysing isotope abundances versus their distance from the beach.
For instance, imagine sea water evaporating. The slightly ligther 1H isotope evaporates faster than the heavier dueterium 2H isotope, hence clouds contain more 1H. As these clouds move inland, the heavier water (2H containing), falls as rain sooner, meaning rain water closer to the sea contains more dueterium.
This same principle can be applied to all the elements, and although, strictly speaking isn't a chemical reaction, more of a physical process, you can see that this principle can be applied in certain reactions. so, yes, isotopes do differ in reactivity.
Thrutchywaynefish
What are atoms with 16 neutrons and 12 protons?
4+ because however much more protons there are then that is the charge
