Name: bromine
Symbol: Br
Atomic number: 35
Atomic weight: 79.904 (1)
Group in periodic table: 17
Group name: Halogen
Period in periodic table: 4
Block in periodic table: p-block
CAS registry ID: 7726-95-6
Bromine is the only liquid nonmetallic element. It is a member of the halogen group. It is a heavy, volatile, mobile, dangerous reddish-brown liquid. The red vapour has a strong unpleasant odour and the vapour irritates the eyes and throat. It is a bleaching. When spilled on the skin it produces painful sores. It is a serious health hazard, and maximum safety precautions should be taken when handling it.