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