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8 g of O^(2-) ion has amount of charge e...

`8 g of O^(2-)` ion has amount of charge equal to : `(N_(A) = 6.02xx10^(23) , e = - 1.6xx10^(-19)C)`

A

`5N_(A)eC`

B

`2N_(A)eC`

C

`N_(A)eC`

D

`(1)/(2)N_(A)eC`

Text Solution

Verified by Experts

The correct Answer is:
C
`8 g of O^(2-)` ion has amount …………
Moles of `O^(2) = (8)/(16) = (1)/(2)`mole
Number of `O^(2-)` ions `= (1)/(2)xxN_(A)`
Total Change on `O^(2-) = (1)/(2)xxN_(A)xx2e=N_(A)eC`.
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