JEE Advanced2020ChemistryStructure of AtomActual
The figure below is the plot of potential energy versus internuclear distance ( d ) of H 2 molecule in the electronic ground state. What is the value of the net potential energy E 0 (as indicated in the figure) in kJ mol - 1 , for d = d 0 at which the electron-electron repulsion and the nucleus-nucleus repulsion energies are absent? As reference, the potential energy of H atom is taken as zero when its electron and t
Correct answer
0
Step-by-step solution
For one H atom P . E .   =- kq 1 q 2 r =- 9 × 10 9 × 1 .6 × 10 − 19 2 0 .529 × 10 − 10 =- 9 × 1 . 6 × 1 . 6 0 . 529 × 10 - 19 Total potential energy for 2 H-atom (per mole) =- 2 × 9 × 1 .6 × 1 .6 0 .529 × 10 − 19 × 6 × 10 23 = -5246 .5   kJ / mole