In atomic form (as opposed to being an ion), cesium-137 has 55 electrons, just as all cesium atoms have.
Cesium-137 has 78 neutrons, 55 protons and 55 electrons(same as atomic number)
There are 82 neutrons in an atom of cesium 137. Number of neutrons = mass number - atomic number = 137 - 55 = 82
How many neutrons are in Cesium-130 (Cs)?
55
75
There are 78
Cesium-137
It's not just Cesium 137. Of the 3000 or so known isotopes, MOST undergo radioactive decay. Only a fairly small percentage of the isotopes are stable. Usually, stability is achieved when the amount of neutrons, compared to the amount of protons, is "just right" - not too few, not too many. For the heavier elements (beyond lead), stability is no longer possible for ANY isotope.
Proton = 1 Neutron = 1 Electron = 0.00054
Strontium-90 and cesium-137 and a whole lot more.
The atomic number of barium is 56. So there are 56 protons and 56 electrons.
Only if it loses two neutrons
You are looking for the symbol of cesium (Cs) and indication of its mass number. The mass number is the sum of the protons and neutrons. So if every atom of cesium has 55 protons, then the mass number of this isotope is 137. The mass number is indicated in superscript before the symbol: 137Cs
Cesium has an atomic number of 55. Fifty-five indicates the number of protons and electrons. The task here is to find the number of neutrons. To do so, take 134 and subtract 55 to get 79.
137Cs55 is the symbol for cesium 137.
there are 55 protons Cs in the periodic table .
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Ceasium is a metal element. Atomic mass of it is 133.
Cesium-137
It's not just Cesium 137. Of the 3000 or so known isotopes, MOST undergo radioactive decay. Only a fairly small percentage of the isotopes are stable. Usually, stability is achieved when the amount of neutrons, compared to the amount of protons, is "just right" - not too few, not too many. For the heavier elements (beyond lead), stability is no longer possible for ANY isotope.
It's not just Cesium 137. Of the 3000 or so known isotopes, MOST undergo radioactive decay. Only a fairly small percentage of the isotopes are stable. Usually, stability is achieved when the amount of neutrons, compared to the amount of protons, is "just right" - not too few, not too many. For the heavier elements (beyond lead), stability is no longer possible for ANY isotope.
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Cesium-137 will react with chlorine to form cesium chloride. However it is highly radioactive so must be handled carefully, because of this it is often used to treat cancer patients and sterilize medical equipment and some foods.