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Cerium has four naturally occurring isotopes, listed in the table below. One isotope of cerium is far more abundant than any of the others. Determine the number of neutrons for each isotope and identify which isotope is the most abundant. Isotope Isotope mass (amu) 136Ce 135.907 138Ce 137.906 140Ce 139.905 142Ce 141.909 A:What is the number of neutrons in 136Ce? B:What is the number of neutrons in 138Ce? C:What is the number of neutrons in 140Ce? D:What is the number of neutrons in 142Ce?