Atomic StructureHard

Question

What is the energy of He⁺ electron in first orbit ?

Options

A.40.8eV

B.-27.2eV

C.-54.4eV

D.-13.6eV

Solution

E = eV for He⁺, Z = 2, n = 1(first orbit)
∴ E = = - 54.4eV

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