Question

While observing the gradation of the halogen family at the room temp________​

Answer 1

$\huge\mathfrak\pink{Answer}$

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

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.