0
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 is the most available form of carbon for life?
If you mean which isotope, then carbon-12 is the most abundant. If you mean where does the carbon come from, then it's atmospheric carbon dioxide for plants, and food for animals.
What subatomic particles identifies beryllium?
Pretty much any element is identified by its atomic number or number of protons; in the case of beryllium it has four of them in its nucleus. It's somewhat a matter of convention that it is beryllium by definition so long as it has those four protons; any element might be in a different oxidation state having gained or lost electrons, or be a different isotope by varying the number of neutrons, but the atomic number or number of protons is used to identify elements.
What is the difference between radioactive and non-radioactive isotope?
Radioactive minerals are unstable and emit radiation at a constant rate. They also have half lives and lose energy overtime. Nonradioactive minerals are stable, and by there own are incapable of emitting energy.
Which two notations represent different isotopes of the same elements?
Example with the istope 235 of uranium:
- 235
92U (recommended) or
- U-235
Which are the two important particles in an isotope?
The atomic particles of an isotope are the proton, electron and neutron
What are two isotopes that were released in the chernobyl accident?
Actually there were hundreds of isotopes released, about the same mix (any isotope having mass numbers from 72 to 161) as one would get from any fission bomb but in much larger quantity as the reactor core is much larger than any fission bomb core.
A few of the isotopes and some effects (where known) are:
- selenium-75
- krypton-85
- strontium-90, replaces calcium in bones causing weakening and/or cancer
- zirconium-95
- niobium-95
- xenon-127
- telerium-132
- xenon-133
- iodine-131, concentrates in thyroid killing it and/or causing cancer
- cesium-134, replaces potassium in the body causing widespread damage
- cesium-137, replaces potassium in the body causing widespread damage
- lanthanum-140
- cerium-144
- promethium-145
- promethium-147
- etc.
isotopes are atoms of an element with different #'s of neutrons (these are electrically neutral particles which change the weight of the atom); hydrogen has three isotopes; all three atoms have 1 proton and 1 electron but vary from no neutrons(the most common type of atom or isotope) to atoms with 1 neutron and 2 neutrons.
When curium-242 is bombarded with alpha particles a neutron and what are formed?
The nuclear reaction is: 242Cm + 4He = 245Cf + n
How many stable isotopes does oxygen have-?
Oxygen consists of three stable isotopes: 16O, 17O, and 18O
What is the most common isotope of the number of the electrons in osmium?
The most common isotope of osmium is 192 Os. All osmium isotopes contain 76 electrons.
This is the gamma radiation.
What is the belt or band of stability for isotopes?
The belt of stability is a graph which help to identify unstable isotopes.
See also this link.
How much do isotopes that share an element differ in the number?
Isotopes have a different number of neutrons but the number of protons and electrons is the same.
What Is the weighted average of all of the isotopes of an element.?
The answer is the atomic weight of the original element: It's the number on the top left of each element square of the Periodic Table.
Different isotopes of an atom retain the properties of the atom-?
Isotopes of an atom does retain the properties of the atom. This is discrete in units of matter.
How is isotopes related to number of electrons?
An isotope is not really related to the number of electrons, but rather it is determined by the number of neutrons.
What element was made by bombarding plutonium and alpha particles?
The reaction is:
Pu-239 + alpha = Cm-242 + n
How is an isotope of hydrogen with atomic number 2 and mass number 4 written?
This case is impossible. Hydrogen will always have an atomic number of 1.
How are Xe-129 and Xe-130 same and how are they different?
They have the same number of protons (54) and electrons. 130Xe has one more neutron in the nucleus.
