Solve this: 30 What is the energy of the electron revolving in third orbit expressed in eV (1) - Physics - Atoms

Question

Solve this:
30 What is the energy of the electron revolving in third orbit
expressed in eV?
(1) 1 51 eV (2) 3 4 eV
(3) 4 53 eV (4) 4 eV

S Z · Answer

En?= -13 6/n2?eV, here n=3 and hence En?= 1 51eV so it's (1)

Solve this: 30. What is the energy of the electron revolving in third orbit expressed in eV? (1) 1.51 eV (2) 3.4 eV (3) 4.53 eV (4) 4 eV