Subjective Type

Explain why the following is not correct : Reactivity increases with atomic number in a group as well as in a period.

Solution

On moving from left to right in a period , the reactivity first decreases and then increases since the tendency to lose electrons first decreases on going from left to right and then from P to Cl tendency to gain electrons increases , so reactivity increases then. In case of a group, reactivity increases on going down since the tendency to lose electrons increases but for nonmetals , reactivity decreases on going down the group as the tendency to gain electrons decreases down the group.

SIMILAR QUESTIONS

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