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The charge present on 2.8 g of N^(3-) in...

The charge present on 2.8 g of `N^(3-)` in coulombs is

A

`5.78 xx 10^4`

B

`36.13 xx 10^(22)`

C

`1.93 xx 10^4`

D

`22.58 xx 10^3`

Text Solution

Verified by Experts

The correct Answer is:
A
Number of ions in 2.8 g of `N^(3-) = (2.8 )/(14) xx 6.023 xx 10^(23)`
` = 12.046 xx 10^(22)`
One nitride ion contains 3 unit electronic charge i.e.
` 3 xx 1.6 xx 10^(-19) ` coulomb
` therefore ` Total charge present on 2.8 g `N^(3-)` ions
`=12.046 xx 10^(22) xx 3 xx 1.6 xx 10^(-19) = 5.78 xx 10^4 ` coulombs
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