MHT CET20243 May 2024Evening ShiftChemistryStructure of AtomActual
What is the energy associated with first orbit of He ⁺ ?
Options
- A-2.18 10⁻¹⁸ ~J
- B-4.36 10⁻¹⁸ ~J
- C-6.54 10⁻¹⁸ ~J
- D-8.72 10⁻¹⁸ ~J
Correct answer
D. -8.72 10⁻¹⁸ ~J
Step-by-step solution
For the first orbit of monopositive He ⁺ ion, aligned & Z=2, n=1 & E_n=-2.18 10⁻¹⁸ ( Z^2 n^2 ) J & E₁=-2.18 10⁻¹⁸ ( 2^2 1^2 )=-8.72 10⁻¹⁸ ~J aligned