Question

2. The energy of an electron in the first orbit in hydrogen atom is-313.6/m² kcal mol. What will be the energy of the electron in 3rd orbit?​

Answer 1

34.8/m² kcal mol

Step-by-step explanation:

The energy of an electron in an orbit in a hydrogen atom is proportional to the reciprocal of the square of its orbital number. Therefore, the energy of an electron in the 3rd orbit can be calculated as follows:

Energy (3rd orbit) = Energy (1st orbit) * (1/3)^2

Energy (3rd orbit) = 313.6/m² kcal mol * (1/9)

Energy (3rd orbit) = 34.8/m² kcal mol

So the energy of an electron in the 3rd orbit of a hydrogen atom is 34.8/m² kcal mol.

ALLEN

Answer 2

The energy of an electron in the third orbit in a hydrogen atom is -3.4 eV.