Question
Question: The energy of an atom (or ion) in its ground state is – 54.4 eV. It may be –...
The energy of an atom (or ion) in its ground state is – 54.4 eV. It may be –
A
Hydrogen
B
Deuterium
C
He+
D
Li++
Answer
He+
Explanation
Solution
–13.6 z2 = – 54.4 Ž Z = 2
\ He+ is answer