Question

elements of group 17 are coloured why?​

Answer 1

Answer:

elements of group 17 are coloured why?

Explanation:

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.

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