JEE Main 2008Annual, Paper 1ChemistryMediumAtomic Structure113× since 2002
The ionization enthalpy of hydrogen atom is 1.312 × 10⁶ J mol−1. The energy required to excite the
electron in the atom from n = 1 to n = 2 is
JEE Main 2008 · Annual, Paper 1 · Q2155