Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect? (The Bohr radius is represented by ${\mathrm{a}}_0$ ).

• A

  The total energy of the electron is maximum when it is at a distance ${\mathrm{a}}_0$ from the nucleus.
• Correct answer
  B

  The electron can be found at a distance $2{\mathrm{a}}_0$ from the nucleus.
• C

  The probability density of finding the electron is maximum at the nucleus.
• D

  The magnitude of the potential energy is double that of its kinetic energy on an average.

Solution

From the graph it is clear that probability of finding electron is maximum at the nucleus

Hence, the correct answer is option: 'B'.