In case of halogens the electrons present in outer shell absorb the energy in visible region and get excited to higher level . During these transitions the emissions are in visible region thus these compounds appear coloured.
Why halogens are coloured ?
Posted byAnkush SharmaPosted inchemistry
Published by Ankush Sharma
I am M.Sc (chemistry ) from Punjabi University Patiala. I am a science teacher with expertise in chemistry, with 8 years of experience in teaching. Writing and blogging is my hobby, I write whenever I am free. I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge. View more posts