What is the ionization energy of singly ionized helium?
A. 54.4 eV
B. 27.2 eV
C. 13.6 eV
D. none of the given answers
Answer:A
What is the ionization energy of singly ionized helium?
A. 54.4 eV B. 27.2 eV C. 13.6 eV D. none of the given answers