The atomic mass of an element is always a ________ of aomic mass of all naturally occuring isotopes.

Sum

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Weighted Average

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Product

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Highest number

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Solution

The correct option is B
Weighted Average

The atomic mass reported on a periodic table is the weighted average of all the naturally occuring isotopes. Being an average it would be most unlikely to always be a whole number. The mass of an individual atom in atomic mass units is the mass relative to carbon-12.

Example: Atomic mass of chlorine is 35.5u

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Similar questions

Q. The average atomic mass represents the average of all the naturally occurring isotopes of the element.

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^{'} E^{'}

has the following isotopic composition:

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Q. An element, X has the following isotopic composition;

^{200} X : 90

^{199} X : 8.0

^{202} X : 2.0

%
The weighted average atomic mass of the naturally-occurring element X is closest to:

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