Question

What is the common feature between chlorine and bromine? What are they
commonly called?

Answer 1

Explanation:

They are called halogens.

Common features among them are:

1. They both contain 7 electrons in their outermost shell.
2. They are most oxidizing agents in their respective periods.
3. They form acids on reaction with hydrogen.
4. They are the most electronegative in their respective periods.

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Answer 2

Answer:these are called halogens