[Solved] Why Does Reactivity Decrease Down Group 7?

Why Does Reactivity Decrease Down Group 7

Answer: The reactivity of an element decreases down the group because as you move down the group, the amount of electron shielding increases. As a result, the electron is less attracted to the nucleus and is, therefore, more easily lost.

This means that group 7 elements react by gaining an electron: they are electropositive. As you move down the group, the amount of electron shielding increases, meaning that the electron is less attracted to the nucleus. This means that group 7 elements react by gaining an electron: they are electropositive.

The reactivity of an element decreases down a period because as you move down a period, there is less energy available for chemical reactions to take place. This means that there are fewer energy levels for electrons to occupy in elements lower down a period than those higher up a period.

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