The periodic table is a very handy tool, and can be used to predict the properties of the different elements. Which of these rules is not a general rule that can be used to predict properties of elements from the periodic table?
Explanation
Answer: B - The reactivity of elements is not governed by a direct rule in the periodic table. Typically, elements on the left and right edges of the periodic table (with the exception of the noble gases) are very reactive. However, some elements in the middle, such as zinc or iron, are also quite reactive, so this is not a good general rule either.
