Science People Pleasee HEL a)In the original periodic table proposed by Mendeleev, the elements were arranged in order of a certain property. State that property.

b) In the modern periodic table, the elements are arranged in order of another property. State that property.

c) Write a sentence or two explaining how Mendeleev was able to come up with a periodic table that is close to the modern periodic table when he used the “wrong” property to arrange the elements. [Hint: Are the two properties related in any way?]