is the isotopic mass of a given isotope ever a whole number? is it always? consi

Question

is the isotopic mass of a given isotope ever a whole number? is it always? consider carbon and copper Paired Exercise 5.10 Is the isotopic mass of a glven ibotope ever a whole number? ts it alveays? (Consider c andu) The isotooe of 60 The isotope of C with a mass of 12 is ann with a mass of 12 is an number by definition. The mass of other isotopes, such as 290 u not be an [ number by definition. The mass of other isotopes, such as 2Cu , will not be an "atomic mass(es). The atomic mass given in the periodic table is the " mass of Question Attempts: 0 of 3 used SAVE FOR LATER

Explanation / Answer

The isotope of 12C(6) with a mass of 12 is an whole number by definition. The mass of other isotopes such as 63Cu(29), will not be an whole number because most elements exist in nature as a mixture of isotopes with fractional atomic masses. The atomic mass given in the periodic table is the relative mass of most abundant isotope(s).

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