Isotopes are two or more types of atoms that have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), and that differ in nucleon numbers (mass numbers) due to different numbers of neutrons in their nuclei. While all isotopes of a given element have almost the same chemical properties, they have different atomic masses and physical properties.The term isotope is formed from the Greek roots isos (ἴσος "equal") and topos (τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table. It was coined by Scottish doctor and writer Margaret Todd in 1913 in a suggestion to chemist Frederick Soddy.
The number of protons within the atom's nucleus is called atomic number and is equal to the number of electrons in the neutral (non-ionized) atom. Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons. The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope of a given element has a different mass number.
For example, carbon-12, carbon-13, and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13, and 14, respectively. The atomic number of carbon is 6, which means that every carbon atom has 6 protons so that the neutron numbers of these isotopes are 6, 7, and 8 respectively.
I seem to be stuck on this problem. I thought calculating the velocity of the center of mass of the system would get me somewhere, but I remain confused about where to go next. Here is the problem:
The light isotope, 5^Li is unstable and breaks up spontaneously into a proton (hydrogen nucleus)...
Hi on a test there was a question that said "Which symbols represent atoms that are isotopes of each other?" the answer turned out to be 16O and 18O, the numbers referring to the number of protons and neutrons. Anyhow I wanted to know what you have to do in order to get that answer as I got...
I was viewing a site on the flat Earth society when I came across their application form to join. Here are a few ridiculous things listed:
Favorite Radioactive Isotope:
Favorite Mineral:
Favorite Eastern European Nation:
Favorite Presidential Cabinet Member
Which is your...
Does anyone know of any book, program, or website that has a ton of detailed information about isotopes? Such how many and what particles they emit (alpha, beta, gamma, x-ray). What the max and average energy those particles have. What range in water and tissue those particles have. What their...
I am doing a report on superconductors. One of the ideas to support the idea of bandgaps in the superconductor is the isotope effect. Unfortentualy I have been an able to find any information on how exactly the isotope effect works. Any information would be greatly appreciated, thank you...
The current understanding of palaeo climate is fundamental for the current views on climate mechanism. One important part in that is using the stable isotope ratios, mainly of 18O and 2H or deuterium. We have registered those in the ice cores of Greenland and Artarctica as well as in the oceanic...