Question

Observe the modern periodic table and explain the gradation in reactivity of halogen family

Answer 1

Friend just apply this logic

"Jab ham down the group jate hai to electropositive character increase karta hai. To ham ye kah sakte hai ki reactivity increases like this.

I < br < cl< f

So agar ap tenth me ho to entna kafi hai.

Dost i am talking in hindi because today is republic day.