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Oxygen contains 90% of O^(16) and 10 % "...

Oxygen contains 90% of `O^(16) and 10 % " of " O^(18)`. Its atomic mass is

A

`17.4`

B

`16.2`

C

`16.5`

D

17

Text Solution

Verified by Experts

The correct Answer is:
B
Oxygen has 90% `O^(16) and 10 % O^(18)`
Atomic mass = `[(90)/(100) xx 16 + (10)/(100) xx 18]`
`= (1440 + 180)/(100) = (1620)/(100) = 16.2`
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