Chemistry · Structure of atom

The energy of the electron in the ground state of hydrogen atom is given by \( E_1 = -2.18 \times 10^{-18} \text{ J} \). What is the energy of the stationary state for \( n = 2 \)?

1. A
   \( -1.09 \times 10^{-18} \text{ J} \)
2. B
   \( -0.545 \times 10^{-18} \text{ J} \)
3. C
   \( -4.36 \times 10^{-18} \text{ J} \)
4. D
   \( -2.18 \times 10^{-18} \text{ J} \)