Atomic Mas
neutrons
Isotopes must have the same atomic number, which is the number of protons. The atomic mass, which is the total number of protons and neutrons, varies for the different isotopes. so it should have different mass numbers..
The number of neutrons for any given element varies, depending on the isotopes. Search the Wikipedia, or Google, for "Isotopes of Zirconium" for the isotopes of this particular element. The list of isotopes will give you the atomic mass (protons + neutrons) for the different isotopes; subtract the atomic number (which is the number of protons) to get the number of neutrons for each isotope.
No, all isotopes of an element have the same number of protons (which determines the element's identity) and therefore the same number of electrons in a neutral atom. Isotopes differ in the number of neutrons they contain.
All neutral atoms of an element, including any of its isotopes, always do have the same number of electrons. The existence of isotopes has nothing to do with the number of electrons in an atom. Instead, the number of neutrons varies between isotopes of the same element. The number of electrons varies from that of a neutral atom only if an ion of the element is formed.
Ions and isotopes are both atoms of a given element with a different number of particles. While the number of protons in an element never change, the number of neutrons and electrons can. In an ion their is a different number of electrons, changing the charge, but having a negligible effect on the mass. Among isotopes the number of neutrons varies, changing the atomic mass but not the charge.
Isotopes are two or more forms of the same chemical element that differ in atomic mass due to having a different number of neutrons in their nuclei. These isotopes of an element have the same number of protons and electrons but vary in their overall mass.
An element must always have the same number of protons as it's atomic number. The number of electrons may vary, making an atom into an ion, and the number of neutrons can also vary which is why we have different isotopes of the same element.
It depends on the isotope (atoms of lead with different numbers of neutrons). There are three stable isotopes of lead:206Pb has 124 neutrons207Pb has 125 neutrons208Pb has 126 neutrons
First: isotopes are not 'special' forms of elements, they are just (normal) elements.Isotopes of one element are only different nuclear configurations of that same element, which varies only in the number of neutrons present: thus only their mass is different.Since mass is not a chemical property, isotopes are chemically speaking identical and that's why they are on the 'same spot' in the (chemical) Periodic Table: 'iso' = same, 'topos' = place.
Atomic number is the number of protons in the nucleus of an atom, and each element has a unique atomic number that is the same for all of its atoms. Mass number is the number of protons and neutrons in the nucleus of a specific isotope of an element. Mass number varies with different isotopes because of different numbers of neutrons.
One quick way to find that out is to open the Wikipedia and type "Isotopes of Carbon", "Isotopes of Uranium", or whatever element you are interested in. Please note that each element has several different isotopes; the number of neutrons varies from one isotope to another.