Page 179 - The Periodic Table Book

F

Cl

Br

I

At

Ts

The Halogen Group

One of the most reactive groups in the periodic table, this set includes

non-metals. The name “halogen” means “salt former”, which refers
to the way that elements in this group react with metals to form salts,
such as sodium chloride, widely known as common salt. Scientists
don’t know much about tennessine (Ts), an artificial halogen.

Atomic structure Physical properties Chemical properties Compounds
All members have seven Bromine (Br) is the only Every halogen atom The halogens react with
electrons in the outer shell halogen that is liquid. receives one electron from hydrogen (H) to form acidic
of each atom. There is space Fluorine (F) and chlorine other atoms to form compounds. Halogen
for one more electron in (Cl) are gases, while iodine a compound. Reactivity compounds are used in
each outer shell. and astatine (At) are solids. decreases down the group. products such as bleach.

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