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the amount of energy released when 10^(6...

the amount of energy released when `10^(6)` atoms of iodine in vapour state are converted to `I^(-)` ions is `4.8 xx 10^(-13) J`. What is the electron affinity of iodine in ev/atom.

A

`2.0`

B

`2.5`

C

`2.75`

D

`3.06`

Text Solution

Verified by Experts

The correct Answer is:
D
Energy released for `10^6` atoms `= 4.9 xx 10^(-13) J`
`:.` Energy released for 1 atom ` = (4.9 xx 10^(-13))/(10^6) J`
` = (4.9 xx 10^(-13) xx 10^(-6))/(1.6 xx 10^(-19))`
` = 3.06eV`.
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