The nucleus of an isotope, mass 203.3168 amu, contains 81 protons and 121 neutrons. Calculate the mass defect for an atom of this isotope. Mass of a proton = 1.007275 amu. Mass of a neutron = 1.008666 amu. 0.3211 You are correct. Your receipt no. is 159-8662 Previous Tries Calculate the binding energy, in eV, for a single nucleus of the isotope described in the previous question. One eV = 96485 J/mol.

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A: alpha particle:

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A:

Q: lonization radiation usually affects molecules in human cells like:

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A:

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A:

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.