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The mass numbers of three isotopes of an...

The mass numbers of three isotopes of an element are 10,12,14 units. Their percentage abundance is 80,15 and 5 respectively. What is tha tomic weight of the element?

A

`10.5`

B

`11.5`

C

`12.5`

D

`13.5`

Text Solution

Verified by Experts

The correct Answer is:
A
Avg. at.wt `=(sum% "abudance" xx "Atomic weight")/("Total ratio")`
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