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A sample of AlF3 contains 3.0 xx 10^24...

A sample of `AlF_3` contains `3.0 xx 10^24 F^(-)` ions. The number of formula units of this sample is :

A

`2.0 xx 10^24 `

B

`1.0 xx 10^24`

C

`5 xx 10^23`

D

`9.0 xx 10^24`

Text Solution

Verified by Experts

The correct Answer is:
B
`3F^(-)` are present in one `AlF_3` formula unit
No. of `AlF_3` formula units ` = (3.0 xx 10^24)/(3) = 1 xx 10^24 `
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