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The atomic number of cesium (Cs) is 55.

The atomic weight of Cs is 132.91 grams per mole.

See the Web Links to the left of this answer for a periodic table with more information about this element!

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What is the mass number for cesium?

The standard atomic weight for cesium is 133. There are 3 other radioactive cesium isotopes that have atomic weights of 134, 135, and 137. Cesium 133 is the only one that is found in nature. The other isotopes are synthetic.


What is the symbol of an isotope of cesium whose atoms have 82 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


What is the mass of 5 moles of cesium?

One atom of cesium has a mass of 132.9054 amu, and one mole of cesium has a mass of 132.9054 grams, so five moles of cesium has a mass of 664.527 grams.Multiplying the mass of a particle (which can be an atom, molecule, etc.) by Avogadro's number (6.022x1023, the number of particles of a substance in 1 mole) will give you the mass of a mole of that particle, or molar mass, in grams. Avogadro's number is special because the molar mass of a substance will be the same number as its atomic mass, only in grams!


How many neutrons does a cesium 141 have?

The atomic number of cesium is 55. The number of neutrons is the isotope mass number minus atomic number, or in this instance 86 neutrons.


What is mass number if atom has 31proton 39neutrons 31electrons?

neutron plus protons = mass number cesium


How many atoms are there in 0.575 grams cesium?

To find the number of atoms in 0.575 grams of cesium, you first need to convert grams to moles using the molar mass of cesium. Then, use Avogadro's number (6.022 x 10^23 atoms/mol) to find the number of atoms in one mole of cesium. Multiply the number of moles by Avogadro's number to find the number of atoms in 0.575 grams of cesium.


Cesium-133 has an atomic number of 55 It has neutrons?

Cesium-133 has an atomic number of 55, which means it has 55 protons in its nucleus. Since the atomic number represents the number of protons, the number of neutrons in an atom of cesium-133 can be calculated by subtracting the atomic number from the atomic mass.


Write the symbol of the ion with a 1 plus charge atomic number 55 and mass number 133?

The element is cesium (Cs) and the cation is Cs^1+


What is the mass of 1 curie of cesium 137?

The mass of 1 curie of cesium-137 is approximately 3.7 grams.


The average atomic mass of the element cesium is approximately 133 you What is the mass of 3.00 mol of cesium?

The molar mass of cesium (Cs) is approximately 133 g/mol. Therefore, the mass of 3.00 mol of cesium would be 3.00 mol x 133 g/mol = 399 g.


What element has an atomic mass of 55.85?

Manganese is a metal element. Mass number of it is 55.


How many neutrons are in an atom of cesium 137?

In atomic form (as opposed to being an ion), cesium-137 has 55 electrons, just as all cesium atoms have.