Xe has 77 neutrons.
225
Xe-n where n is a number which represents the number of nucleons in the atom of the isotope. n can vary between 124 and 136.
There are 9 isotopes, so there is no the isotope.
Tin is the element with the most stable isotopes, ten. Xenon is second with nine isotopes. Both Xenon and Cesium have 36 possible isotopes, but 27 of Xenon's and 35 of Cesium's isotopes are radioactive. This means that they decay over time and "shed" particles. Hydrogen has the smallest amount of isotopes, with three total and two stable isotopes.
Xenon has five electron shells.
10 isotopes 10 isotopes
None of the isotopes of xenon ordinarily found in nature is radioactive. Like all elements, xenon has synthetic radioactive isotopes.
The numer of neutrons depends on the isotope, which, as you've noted, Xenon has several of. Pick one.
Xenon has eight stable naturally occuring isotopes. Besides these stable forms, there are over 40 unstable isotopes that have been studied.
Some isotopes of xenon do undergo radioactive decay to caesium.
Caesium and Xenon, with 36 isotopes each
There are 40 unstable isotopes (an element contained in xenon) that undergo radioactive decay.
It has mostly stable isotopes.
To accommodate the isotopes of Xenon, it is 131.29 + 6*18.998
Most of the isotopes of xenon are stable and even those that do decay, have half-lives of more than a quadrillion years!
Xe-n where n is a number which represents the number of nucleons in the atom of the isotope. n can vary between 124 and 136.
The number of unstable isotopes cannot be determined. Xenon has 9 stable or primordial isotopes. These include isotopes whose half-life is greater than 80 million years which is long enough for some of the atoms to have survived. It is also possible that so-called stable isotopes are not really stable but have half-lives of more than 10^22 years.Of the 9 Xenon isotopes,134Xe has a half-life of 1.1*10^16 years;136Xe has a half-life of 8.5*10^21 years;124Xe has a half-life of 1*10^17 years.
For stable isotopes, it will range from 123.9 grams to 135.9 g.