Mendeleev arranged the elements according to increasing atomic mass. The modern periodic law says that the properties of the elements repeat periodically when the elements are arranged according to a certain trend. ... An incomplete set of atomic mass, density, and melting point data is given for three elements in a triad.
Answer:
5 points is a low number for an entire essay. Answering quiz questions is fine but still a whole essay??
Explanation:
<span>Mass-produced automobiles made travel more affordable for many people.</span>
<span>The Earth and Its Peoples 5th Edition AP Review:
Here is its answer key</span>
