Potential energy -27.2 ev in second orbit of he+ ions then calculate double of total energy in first excited state of hydrogen atom
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Answer:
Energy = -13.6Z²/n²
= -13.6 * 4/4
= -13.6 eV
Radius = 0.529 n²/Z Å
= 0.529 * 4/2
= 1.058 Å
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