Chemistry · Bohr model of a hydrogen atom: its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr's model
Which of the following values corresponds to the value of energy required to rem
Which of the following values corresponds to the value of energy required to remove the second electron from the ground state of helium atom?
- A. 27.2 ev
- B. 13.6 ev
- C. 6.8 ev
- D. 54.4 ev
Step-by-step solution
The second electron is removed from He+, which is a hydrogen-like ion with Z=2. The ionization energy for a hydrogen-like ion is 13.6 * Z^2 eV, so 13.6 * 4 = 54.4 eV.
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