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The Periodic Table
Which answer is the best description of bromine?
A brown liquid
A green gas
A grey solid
The public water supply is sterilised by the use of which halogen?
Which compound is formed when sodium reacts with bromine?
Bromine will displace the halogen from a solution of which compound?
Which is the best explanation of why Group 7 elements have similar properties?
They're all elements
They all have the same sized atoms
They all have seven electrons in their outer shell