Which of the following is correct?
(i) The energy of an electron in an `H` atom has a negative sign for all possible orbits.
(ii) The enegry of an electron in the atom is lower than the enegry of a free electron at rest.
(iii) A free electron at rest is an electron that is infinitely far away form the nucleus and is assigned the enegry value of zero.
(iv) As the electron gets closer to the nucleus (as `n` decreases), `E_(n)` becomes larger in absolute value and more and more negative.

Options

A. `(i),(ii),(iii),(iv)`
B. `(ii),(iii),(iv)`
C. `(i),(ii),(iii)`
D. `(i),(ii),(iv)`

Answer

A

Explanation

`E_(n) = Z^(2)E_(1)//n^(2)`, where `E_(1) =- 13.6 eV "atom"^(-1)`
The most negative enegry value is given by `n - 1` which corresponds to the most stable orbit. We call his the ground stat.The negative sign of enegry depicts the stability of `e^(-)` relative to the relerence state of zero enegry and `n = oo`.