# Niels Bohr discovery

**Niels Bohr discovery improved Rutherford’s nuclear model by suggesting that the electrons revolve in the discrete energy orbits and they do not loose energy while they are in the orbit. Once they move from one orbit to another they emit energy. **

## **Niels Bohr** **2n**^{2 }formula

^{2 }formula

**Electrons are found by 2n ^{2 }formula in different shells where n=shell**

**So n=1 , 2 electron,**

**n=2, 8 electrons,**

**n=3, 18 electrons,**

**n=4, 32 electrons**

**He also suggested
that outermost shell(orbit) cannot accommodate more than 8 electrons.**

**Energy of electron E=
hv where h= plank’s constant and v is
frequency of electron.**

**C=vλ where c= speed of light and λ is wavelength . Thus frequency and wavelength are inversely proportional to each other.**

Read about `Quantum mechanical model of Atom`