varies from family to family on the periodic table\na reactivity\nb specificity
varies from family to family on the periodic table\na reactivity\nb specificity
Answer
Brief Explanations:
In chemistry, elements in different families on the periodic table have different reactivities. Reactivity is a well - known property that varies among element families. Specificity is not a property that is typically described as varying from family to family on the periodic table in a common context.
Answer:
A. Reactivity