Find the wavelength of a photon of light with energy of 9.02x10^-19 J.

2.21 x 10⁻⁷m⁻¹

Explanation:

Given parameters:

Energy of the photon = 9.02 x 10⁻¹⁹J

Unknown:

Wavelength of the photon = ?

Solution;

The wavelength and energy of a photon are related using the expression below;

       E =

h is the Planck's constant  = 6.63 x 10⁻⁴m²kg/s²

c is the speed of light

E is the energy

   h c = E x wavelength

   Wavelength =   =  

   Wavelength = 2.21 x 10⁻⁷m⁻¹

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

i do not get it   at all