Question

Derive an expression similar to the equation for the energy levels above for the single electron in He+ and Li2+ . Calculate the numerical values for the 1s levels (n = 1)?

Answer 1

Step-by-step explanation:

from Bohr's equation,

E = -Z²R/n²

R = 13.6 eV

Z = atomic number of element

for 1s energy level n= 1

E = -(Z)² x (13.6)/(1)²

E = -13.6Z²

calculating the numerical for the 1s energy levels for He+ and Li2+

- for He+

E = -13.6 * (2)² = -54.4eV

- for Li2+

E = -13.6 * (3)² = -122.4eV