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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
Why does a mass of an atom changes if it an isotope?
yes it does b/c the isotopes have different number of neutrons so therefore isotopes cause a change in mass.
What do all isotopes of hydrogen have in common?
both the atomic number and the atomic mass remain the same.
Do isotopes have identical numbers of protons and electron?
Yes, but they have varying amounts of neutrons.
What are the uses of radioactive isotopes in the field of medicine?
The elements that are radioactive in their most common form are radon, technetium, potassium, and uranium. The most obvious use for radon is the automobile industry. Potassium has both medical and agribusiness uses. Uranium is commonly used as a basic fuel for nuclear reactors. Technetium is used in nuclear medicine and industries
An isotope can be produced if a nucleus gains a neutron or if one of the protons in its nucleus decays into a neutron and positron.
What are the benefits and drawbacks of using radioactive isotopes in a workplace?
well its flippin simple losers
Is potassium 40 a stable isotope?
No, potassium-40 is a radioactive isotope of potassium. It undergoes radioactive decay with a half-life of about 1.25 billion years, emitting beta particles in the process.
What determines the nuclear stability of an isotope?
To be an isotope stable, the number of neutrons should not exceed 1.5 times than protons.
Do isotopes have the same number as energy shells?
An electron orbital describes in terms of quantum mechanics the position of each electron around the atomic nucleus, and an energy level is associated with each orbital. The orbitals are grouped in shells and sub-shells, and the energy levels are affected by more than one quantum parameter so the picture gets complicated for atoms with many electrons. If you want to follow this up, try the link below.
How do isotopes hydrogen 2 and hydrogen 3 differ?
Hydrogen isotopes.
1) Protium (H-1)
has 1 proton and one electron
2)Deuterium (H-2)
Has one proton, one electron and 1 neutron.
3)Tritium (H-3)
has 1 proton, one electron and 2 neutrons
How many photons are required to ionize atomic hydrogen?
Ionization energy and electron affinity for cations and anions, respectively.
What is argons most common isotope?
Ar 40 is the most common isotope, accounting for 99.6% of the total (by weight).
What determines the different isotopes from an atom?
The name of the element and the mass number (number of protons + neutrons)
it is written e.g Uranium-235 or symbolically 235U
What is the stable nucleus produced at the end of the decay steps in a uranium decay series?
Thorium, radium, radon, polonium, thallium, etc.
How is a radioactive isotope different from a stable isotope?
The radioactive isotope is disintegrated in time and emit radiations.
What will always be different in the isotopes atoms?
The number of Neutrons in an isotope will always be different.
Why can't two atoms with the same mass number be isotopes of each other?
The number of protons must be the same.
What is technetium 99 half life?
The half life of technetium-99 is 2,111.10e+5 years.
Avoid a confusion between Tc-99 and Tc-99m.
What is the nuclear symbol for an isotope of gallium?
The one you are thinking of is probably the trefoil symbol, three black foils on a yellow background. See link below
What are the two most common isotopes used as nuclear fuels?
- in reactors: yellowcake, a uranium oxide; after that probably metallic uranium
- in stars: ordinary hydrogen; after that helium
Method of dating very old rocks by means of the amount of common lead they contain. Common lead is any lead from a rock or mineral that contains a large amount of lead and a small amount of the radioactive precursors of lead (i.e., the isotopes uranium-235, uranium-238, and thorium-232). By this method, the age of the Earth has been estimated to be c. 4.6 billion years. This figure is in good agreement with the age of meteorites and the age of the Moon as determined independently.
Radiometric dating is used to date rocks (like at the grand canyon) to approximately see how old the earth is. it is inaccurate though. the rocks actually decay faster than they are supposed to. for example: if we take one rock and see how old it is using radiometric dating for one year, it might say it is 10,000 years old. hope it helps!
Radiometric dating is the principal source of information about the absolute age of rocks and other geological features, including the age of the Earth itself, and can be used to date a wide range of natural and man-made materials.
