Calculate the energy associated with the first orbit of He+. What is the radius of This orbit ?

Calculate the energy associated with the first orbit of He+. What is t

1.	Calculate the energy associated with the first orbit of He+. What is the radius of This orbit ?
Answer» E=-2^2/1^2×E○ = -4E○ =-4×13.6=-54.4R=1^2/2×r○ =1/2×0.529×10^-10m=2.645×10^-11 m