Question

how atomic spectrum provide evidence for quantized electronic energy level​

Answer 1

Answer:

Atomic spectrum provide evidence for quantized electronic

energy level​ as they are :

1 . Angular momentum is quantized ( mvr = n h / 4 π ) .

2 . Change in energy has only fixed value in a fixed shell the

energy is fixed quantized .

3 . Emmision and absorption spectrum shows different lines

which shows corresponding wavelength

4 . It  is only possible with quantized energy level

5 . Excitation and dexcitation states of atoms.

All these are evidence for quantized electronic energy level .

Answer 2

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Here is your answer

Atomic spectrum

»SPECTRUM : The light we see from an incandescent filament lamp is white spectrum .when a beam of white light is passed through a prism, the light splits into seven colours (VIBGYOR)

» The splitting of white light into seven clouds is known as depression. The array of seven colours extending from the red to violet is called spectrum

» Spectra are of two types based on the wavelength

1)Visible spectrum

2) Invisible spectrum

» Visible : In the visible region of electromagnetic

» Invisible : Regions containing IR, UV etc...

continuous spectrum : One wavelength merges into another without any gap

Discontinues spectrum : A spectrum in which certain wavelengths are missing us called discontinuous spectrum

» Angular momentum is given by the formula, mvr =nh/2π ,which is called “Bohr's model of quantum condition ”

» Where n is integer (n=1,2,3...).this is called Principal quantum number

» m= mass of the electron

v= velocity of the electron

r= distance of the electron from the nucleus

h=plancks constant

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