Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect? (Bohr's radius is represented bu a0)

Question

Which one of the following about an electron occupying the 1s 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 electron can be found at a distance \(2a_{0}\) from the nucleus.

(3) The 1s orbital is spherically symmetrical.

(4) The total energy of the electron is maximum when it is at a distance \(a_{0}\) from the nucleus.

Answer 1

Correct option is: (4) The total energy of the electron is maximum when it is at a distance \(a_{0}\) from the nucleus.

More far the electrons is from nucleus, more is its energy. Total energy of an electron is given by \(- \frac{13.6z^2}{n^2} . \) 

So as  \(n \uparrow \ \Rightarrow \text{energy}\uparrow\)