Question

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

Answer 1

The elements in the group seven of the periodic table are termed as Halogens. The elements in this group are diatomic in nature and very much reactive. They are believed to be highly reactive with alkali metals and other metals.

One of the reasons for these elements being highly reactive is that they possess high electro negativity. They also possess nuclear charge that is highly effective. They can easily gain electrons.

Within this group, Fluorine is considered to to be highly reactive. The moment you move down the group the electro negativity decreases as the size of the atom increases. The sharing electrons move further away from the nucleus and so does its attraction power decrease.

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