Isotopes have the same number of protons but a different number of neutrons. Different isotopes of a single element are on the same position on the Periodic Table of elements. The existence of isotopes was first suggested in 1913 by a radiochemist named Frederick Soddy.
They are called isotopes.
Isotopes may be stable or unstable. Unstable isotopes go through radioactive decay and may become stable isotopes, or (possibly) a different element.
An isotope of an element has the same number of protons but different number of neutrons. The element carbon has an example of this. Carbon-12 is the normal version of carbon, but Carbon-13 and Carbon-14, which are radioactive, also exist. Because they are radioactive, scientist can use the concentration of the three carbon isotopes to determine the age of old things like fossils.
Isotopes are usually expressed with a mass number such as
14C (carbon) or 31P (phosphorus).
These atoms would be different isotopes of that element. Protons determine which chemical element we have, and neutron count determines which isotope of that element we have.
they are called isotopes.
Isotopes
atoms
Atoms of the same element cannot have different numbers of protons. Different numbers of protons mean different elements. An atom with the a different number of neutrons is called an isotope.
These atoms are called isotopes.
In the neutral state, all atoms of the same element contain equal numbers of protons and electrons. However, most elements have atoms with different numbers of neutrons. These are called isotopes.
Each element has a unique number of protons. If another atom has the same number of protons as that element, it is the same element.
An element's atomic number refers to the number of protons in its nucleus, and this number never varies - an atom with a different number of protons becomes a different element; i.e. an element with one proton is called hydrogen, an element with 2 protons is helium, 3 protons means it's lithium etc). Usually there are the same number of neutrons as there are protons, but this number can vary, and when an element doesn't have the standard number of neutrons it's called an isotope. The mass number of an element is the sum of the number of protons plusneutrons, which is why this number can is different for different isotopes.
Two atoms with the same number of protons but different numbers of neutrons are called "isotopes".
Atoms of the same element cannot have different numbers of protons. Different numbers of protons mean different elements. An atom with the a different number of neutrons is called an isotope.
These atoms are called isotopes.
These atoms are called isotopes.
In the neutral state, all atoms of the same element contain equal numbers of protons and electrons. However, most elements have atoms with different numbers of neutrons. These are called isotopes.
Atoms which have different number of protons and neutrons but have the same molecular weight are called Isobars.
Two atoms with the same number of protons are not two elements but one element. If they have differing numbers of neutrons, however, they are said to be of different isotopes.
No, they can't. Atoms (be careful of the difference between atoms and ions) can only have different numbers of neutrons, and those are called isotopes.
They are called Isotopes
Atomic numbers are determined by the number of protons an atom has. The mass number is determined by the number of protons and neutrons. While the number of protons can't change (as the element itself would change), neutrons can and do vary. These are called isotopes.
Iodine has 53 protons. Iodine 126 has 126 - 53 = 74 neutrons. So iodine 126 is called iodine 16 because it has 53 protons and 74 neutrons. There are other types of iodine, called neuclides of iodine, which have different numbers of neutrons. All of them have 53 protons. So iodine 141 has 53 protons and 141 - 53 = 88 neutrons.
All atoms of the same element contain the same number of protons and electrons, but atoms of a given element may have different numbers of neutrons. Atoms with the same number of protons but different numbers of neutrons are called isotopes. An element has many isotopes--each with a close, but different number of neutrons.