MEDIUMMCQ SINGLEJEE Advanced ChemistryInorganic Chemistryp -Block Elements (group 15-18)O and O

All the halogens are coloured. The colours arise due to

A.weak van der Waals forces between the halogen

B.strong oxidizing power of the halogens

C.absorption of light which causes an electron to jump✓ Correct

D.emission of light due to transfer of an electron from

Explanation

Halogens are colored because it has low ionization energy. Due to this reason, valence shell electrons get excited to higher region or higher energy level. The amount of energy for excitation of electrons is different for different halogens. However, It absorbs radiation in visible region and emits the complementary color. Thus, the correct option is (c) absorption of light which causes an electron to jump from the ground state to a higher state.

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