CUET Preparation Today
CUET
Physics
Atoms
The ionization potential for second He electron is
13.6 eV
27.2 eV
54.4 eV
100 eV
For the ionization of second He electron. He+ will act as hydrogen like atom. Hence ionization potential
$=Z^2 \times 13.6$ volt $=(2)^2 \times 13.6=54.4 V$