Question

define average atomic mass ?

Answer 1

Answer :

Average atomic mass of an element is defined as the average mass of a elements's isotopes on the basis of their percentage of abundance found in nature and mass number.

For example : - Average atomicass of chlorine is 35.5

Average atomic mass is given as :

Average atomic mass = [{(percentage)×mass no}. + {(100 - percentage) × mass no.}]/100

Here, percentage is the  percentage of abundance of first isotope of an element found in nature.

Answer 2

Heya friend,

Here is your answer.. :)

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Answer :

Average Atomic Mass

Average Atomic Mass of an element is defined as the average mass of a elements's isotopes on the basis of their percentage of abundance found in nature and mass number.

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 For example :-

Average atomic mass of chlorine(Cl) is 35.5

Average atomic mass is given as :

Average atomic mass = [{(percentage)×mass no}. + {(100 - percentage) × mass no.}]/100  

Here, percentage is the  percentage of abundance of first isotope of an element found in nature.

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Hope this will help you..

Be brainly.. :)