Question

Minimum energy required to take out the only one electron from the ground state of He⁺ is –

• A. 13.6 eV
• B. 54.4 eV
• C. 27.2 eV
• D. 6.8 eV

Answer 1

Answer: (B)

54.4 eV

Answer 2

DE = $\left( 13.6\frac{Z^{2}}{n^{2}}–0 \right)$eV