From the following list of observations, choose the one that most clearly suppor

Question

From the following list of observations, choose the one that most clearly supports the following conclusion:

a)

emission spectrum of hydrogen

b)

diffraction

c)

scattering of alpha particles by metal foil

d)

the photoelectric effect

e)

cathode "rays"

        Electrons in atoms have quantized energies.

a)     observation a

b)     observation b

c)     observation c

d)     observation d

e)     observation e

a)

emission spectrum of hydrogen

b)

diffraction

c)

scattering of alpha particles by metal foil

d)

the photoelectric effect

e)

cathode "rays"

Explanation / Answer

CATHOD rays electrons in atom have quantised energy. this is prooved by j j Thomsons.

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