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Why are halogens coloured

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Why are halogens coloured

Posted by Md Shamim Akhtar 7 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Gangeshver Sharma 7 years, 1 month ago

Halogens contain one unpaired electron. It excites from visible region to higher energy level and when it comes back to the visible region, it emit light.

Rupali Agrawal 7 years, 1 month ago

Because unpaired electron absorbs energy from visible region and get excited to higher energy level and when it came back to lower energy level they emit wavelenghts due to which they get coloured.

Rahul Thakur 7 years, 1 month ago

Because presence of one free electron

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