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57. The ionisation enthalpy of hydrogen atom is 1.312 × 1000000 J/mol. The energy required to excite the electron in the atom from n=1 to n=2 is

Answer» 57. The ionisation enthalpy of hydrogen atom is 1.312 × 1000000 J/mol. The energy required to excite the electron in the atom from n=1 to n=2 is


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