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JEE Main2008ChemistryStructure of AtomActual

The ionization enthalpy of hydrogen atom is 1.312 10^6 Jmol ⁻¹ . The energy required to excite the electron in the atom from n=1 to n=2 is

Options

  1. A8.51 10^5 Jmol ⁻¹
  2. B6.56 10^5 Jmol ⁻¹
  3. C7.56 10^5 Jmol ⁻¹
  4. D9.84 10^5 Jmol ⁻¹

Correct answer

D. 9.84 10^5 Jmol ⁻¹

Step-by-step solution

aligned & E = E ₂- E ₁=- 1.312 10^6 2^2 - (- 1.312 10^6 1 ) & =9.84 10^5 ~J ~mol ⁻¹ aligned

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