1. Observe the Modern Periodic Table and explain the gradation in reac

1.	1. Observe the Modern Periodic Table and explain the gradation in reactivity of Halogen family.
Answer» As studying the Modern periodic table, The group 17 contains the members of the halogen family. All of them have the general formula X2. A gradation is observed in their physical state down the group. Thus, fluorine (F2) and chlorine (Cl2) are gases. Bromine (Br2) is a liquid while iodine (I2) is a solid.

1. Observe the Modern Periodic Table and explain the gradation in reactivity of Halogen family.

Answer»

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

All of them have the general formula X2. A gradation is observed in their physical state down the group.

Thus, fluorine (F2) and chlorine (Cl2) are gases. Bromine (Br2) is a liquid while iodine (I2) is a solid.