Which one of the following about an electron occupying the \( 1 s \)-orbital in a hydrogen atom ...

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Which one of the following about an electron occupying the \( 1 s \)-orbital in a hydrogen atom is incorrect? (The Bohr radius
P is represented by \( a_{0} \) )
(2019 Main, 9 April II)
W
(a) The electron can be found at a distance \( 2 a_{0} \) from the nucleus.
(b) The magnitude of the potential energy is double that of its kinetic energy on an average.
(c) The probability density of finding the electron is maximum at the nucleus.
(d) The total energy of the electron is maximum when it is at a distance \( a_{0} \) from the nucleus.
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