The ionisation potential for (He^+) is | Chemistry | SolveeIt

Question

The ionisation potential for $He^+$ is

$54.4\,eV$

$6.8\,eV$

$13.6\,eV$

$24.5\,eV$

Answer

$54.4\,eV$

Explanation

Solution

$E_{n} = \frac{-13.6}{n^{2}} Z^{2}$ $E_{1 }= \frac{-13.6}{1^{2}}\times 4$ $= -54.4\, eV$ Ionisation potential $= E_{\infty} - E_{1}$ $= 0-\left(-54.4\right) \,eV = 54.4\, eV$

Chemistry Question on Bohr’s Model for Hydrogen Atom

Solution