Question 649: Atoms & Nuclei

Question

The energy of hydrogen atom in nth orbit is En then the energy in nth orbit of singly ionised helium atom will be

Accepted Answer

As E
n
= $${{ - 2{\pi ^2}m{K^2}{Z^2}{e^4}} \over {{n^2}{h^2}}}$$
For helium
Z = 2. Hence requisite answer is 4E
n
.

Answer

4En

Answer

En/4

Answer

2En

Answer

En/2

Atoms & Nuclei