Physical Properties of Group 17 (halogens)

Physical properties of group 17 (halogens) (chapter 12 part 1)

The first 5 elements are called halogens

Group 17 has 7 valence electrons distributed between s and p orbitals where s orbital is completely filled and p orbital has 5 electrons

Group 17 acquires one electrons to reach electron configuration of nearest noble gas electron configuration

Going down the group the color of halogens gets darker 

Melting and boiling points both increase going down the group

Volatility decreases down the group due to the increase of atomic size, and van der Waals’ forces between molecules.

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