ionic bond is formed between a metal and a non metal
covalent bond is formed between 2 non metals.
In covalent bond:
If both non metals are same, the bond is non polar covalent or pure covalent.
If both non metals are different, the bond is polar covalent.
In Br-Br, both atoms are same.
So, this is pure covalent
Answer: Br-Br
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