How much energy is needed to excite an electron in H-atom from the ground state to first excited state?
A. -13.6 eV
B. -10.2 eV
C. +10.2 eV
D. +13.6 eV
Answer:C
How much energy is needed to excite an electron in H-atom from the ground state to first excited state?
A. -13.6 eV B. -10.2 eV C. +10.2 eV D. +13.6 eV