Question

Why are halogens coloured?

Answer 1

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Almost all halogens are coloured. This is because halogens absorb radiations in the visible region. This results in the excitation of valence electrons to a higher energy region. Since the amount of energy required for excitation differs for each halogen, each halogen displays a different colour.

Halogens have an unpaired electron that is present in the outermost shell (valence shell) of the atom. When photons (light particles) of suitable energy hit the atom, the electron gets excited and moves to higher energy states in the atom. they absorb energy from visible region and show the complimentary colour.

Answer 2

Heya!!

●Halogens absorb radiations in the visible region which results in excitation of outer electrons to higher level resulting in different colours.

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