What Is the Radius of the Ground State Of $\mathrm{He}^{+}$ ?
A)

Multiple Choice

What is the radius of the ground state of $\mathrm{He}^{+}$ ?

A) $0.0529 \mathrm{~nm}$
B) $0.212 \mathrm{~nm}$
C) $0.193 \mathrm{~nm}$
D) $0.0265 \mathrm{~nm}$
E) $0.106 \mathrm{~nm}$