Teaching DSSSB TGT Mock Test 2025 Physics Dual Nature: Photon and Matter Waves The Hydrogen Atom

The ionisation enthalpy of hydrogen atom is 1.312 × 106 J Mol-1. The energy required to excite the electron in the atom from level n = 1 to n = 2 is 

1
9.84 × 105 J Mol-1
2
6.56 × 105 J Mol-1
3
8.51 × 105 J Mol-1
4
3.56 × 105 J Mol-1
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