The energy of a hydrogen-like atom or ion in its ground state is

PHYSICS · Single correct · CBSE · Physics · Atoms · Atoms

Problem

-122.4\,\text{eV}

. It may be: (1) Hydrogen atom (2)

\mathrm{He}^+

(3)

\mathrm{Li}^{2+}

(4)

\mathrm{Be}^{3+}