Question

the energy of an electron of an atom in the first orbit is -27. 2 eV. What will be the energy in the third orbit?​

Answer 1

Energy∝

n

2

Z 2

For Li

2+

, the number of electrons is 1. Thus, orbit number n=1.

Also, for Li the atomic numberZ=3.

Thus, Energy in the first Bohr orbit of Li

2+

=(3)

2

E=9E