Usually the Periodic Table would not be a good source to determine the number of neutrons; the periodic table focuses on the atomic number, which is the number of protons. An element with a given number of protons can have multiple isotopes, which are elements with the same number of protons but a different number of neutrons; in some cases there are a rather large variety of isotopes. Having said that, some periodic tables do represent the commonest isotope or commonest naturally occurring one but are still unlikely to list all possible isotopes.
Isotopes are determined by the number of neutrons in an atom's nucleus. Each isotope of an element has the same number of protons in its nucleus but a different number of neutrons. Isotopes of an element have the same chemical properties but different atomic masses.
The name of the element and the mass number (number of protons + neutrons) it is written e.g Uranium-235 or symbolically 235U
Isotope 89Y and isotope 90Zr has 50 neutrons.
It is the neutron that makes changes in atomic nuclei to change them from one isotope to another. For any given element, that element will have a fixed number of protons. It is, after all, the number of protons that determine the elemental identity. But the number of neutrons in a given element can vary, and we use the term isotope to talk about which particular atom we're investigating. That is, we apply the term isotope to speak to an atom of a given element with a certain number of neutrons in its nucleus.
An atom with a different number of neutrons is called an isotope of the original element. Isotopes have the same number of protons (and thus the same element) but different numbers of neutrons.
Each element on the periodic table has a specific number of neutrons and will vary for its isotope.
Isotopes are determined by the number of neutrons in an atom's nucleus. Each isotope of an element has the same number of protons in its nucleus but a different number of neutrons. Isotopes of an element have the same chemical properties but different atomic masses.
The number of protons determine what element it is, the number of neutrons determine what isotope it is.
This is stable isotope of iodine - iodine-127.
The number of neutrons in an atom determines the isotope of the element. Isotopes of an element have the same number of protons but differing numbers of neutrons. This affects the stability and nuclear properties of the atom.
The isotope of zirconim, 91Zr, has 51 neutrons. In order to solve this problem, one must know that an element's atomic weight is the average of its number of protons and neutrons (only neutrons are variable). Since the atomic number is the number of protons, the atomic number subtracted from the atomic weight gives the number of neutrons. An element in period 5 that has this many neutrons is found to be zirconium (the isotope 91Zr).
The name of the element and the mass number (number of protons + neutrons) it is written e.g Uranium-235 or symbolically 235U
Isotope 89Y and isotope 90Zr has 50 neutrons.
It is the neutron that makes changes in atomic nuclei to change them from one isotope to another. For any given element, that element will have a fixed number of protons. It is, after all, the number of protons that determine the elemental identity. But the number of neutrons in a given element can vary, and we use the term isotope to talk about which particular atom we're investigating. That is, we apply the term isotope to speak to an atom of a given element with a certain number of neutrons in its nucleus.
Silicon is the second most abundant element, and its isotope Silicon-28 has fourteen neutrons (neutrons vary between isotopes, but silicon-28 is the most abundant).
An atom with a different number of neutrons is called an isotope of the original element. Isotopes have the same number of protons (and thus the same element) but different numbers of neutrons.
The antonym for isotope is non-isotope. An isotope refers to atoms of the same element with different numbers of neutrons, whereas non-isotope would refer to atoms of the same element having the same number of neutrons.