The Natural Distribution of the Isotopes of a Hypothetical Element

question 24

Multiple Choice

The natural distribution of the isotopes of a hypothetical element is 60.795% at a mass of 281.99481 u,22.122% at a mass of 283.99570 u,and the remainder has a mass of 286.99423 u.Calculate the atomic mass of the element.

• A)281.99 u
• B)283.29 u
• C)284.00 u
• D)284.33 u
• E)286.99 u

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