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The ionization enthalpy of hydrogen atom...

The ionization enthalpy of hydrogen atom is `1.312xx10^6 "J mol"^(-1)`. The energy required to excite the electron in the atom from n=1 to n=2 is

A

`6.56xx10^5 "J mol"^(-1)`

B

`7.56xx10^5 "J mol"^(-1)`

C

`9.84xx10^5 "J mol"^(-1)`

D

`8.51xx10^5 "J mol"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaE=1.312xx10^6[1/1^2 -1/2^2]`
`=1.312xx10^6xx3/4=0.984xx10^6 =9.84xx10^5` J/mol
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