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

The ionization enthalpy of hydrogen atom is 1.312xx10^6 "J mol"^(-1).

1.	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
Answer» `6.56xx10^5 "J MOL"^(-1)` `7.56xx10^5 "J mol"^(-1)` `9.84xx10^5 "J mol"^(-1)` `8.51xx10^5 "J mol"^(-1)` SOLUTION :`DeltaE=1.312xx10^6[1/1^2 -1/2^2]` `=1.312xx10^6xx3/4=0.984xx10^6 =9.84xx10^5` J/mol