Question

20. Discuss the gradation of the following properties in the halogen family
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Answer 1

Answer:

As studying the Modern periodic table, The group  17 contains the members of the halogen family.  

All of them have the general formula X  

2

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. A gradation is observed in their physical state down the group.  

Thus, fluorine (F  

2

​

) and chlorine (Cl  

2

​

) are gases. Bromine (Br  

2

​

) is a liquid while iodine (I  

2

​

) is a solid.