If the potential energy of the electron in the first allowed orbit in hydrogen atom is `E`: its

Options

A. ionization potential is `E`: its
B. kinetic energy is `-E//2`
C. total energy is `E//2`
D. none of these

Answer

A, B, C

Explanation

a. `U_(1) = E, then total energy in the orbit = (U_(1))/(2) = (E)/(2)`
b. `IE= (TE)_(n = oo) - (TE)_(n = 1) = 0 - (TE)_(n = 1) = - (TE)_(n =1) = - ((E)/(2))`
c. `(KE)_(n =1) = - (TE)_(n =1) = - ((E)/(2))`