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Which one of the following about an electron occupying the 1 s orbital in a hydrogen atom is incorrect ? (Bohr's radius is represented by a 0 )

1. The probability density of finding the electron is maximum at the nucleus
2. The 1 s orbital is spherically symmetrical
3. The total energy of the electron is maximum when it is at a distance a 0 from the nucleus
4. The electron can be found at a distance 2a 0 from the nucleus

Correct answer: The total energy of the electron is maximum when it is at a distance a 0 from the nucleus

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