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The energy absorbed by each molecule (A2...

The energy absorbed by each molecule `(A_2)` of a substance is `4.4 xx 10^-19 J` and bond energy per molecule is `4.0 xx 10^-19 J`. The kinetic energy of the molecule per atom will be.

A

`2.0xx10^(-20)J`

B

`2.2xx10^(-19)J`

C

`2.0xx10^(-19)J`

D

`4.0xx10^(-20)J`

Text Solution

Verified by Experts

The correct Answer is:
A
K.E per atom = `((4.4xx10^(-19))-(4.0xx10^(-19)))/2`
= `(0.4xx10^(-19))/2=2.0xx10^(-20)`
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