The highest oxide of a group VI element has a relative molecular weight of 80. Name the element.

In the Periodic Table of Chemical Elements of D.I. To calculate the relative molecular weight of a complex substance, it is necessary to add up the relative molecular weights of all the molecules of chemical elements that make up the substance. That is, 1 atom of some element and 3 oxygen atoms. The relative molecular weight of 3 oxygen atoms is approximately 48, add the relative molecular weight of sulfur (32) to 48 and get the number 80. The desired chemical element is sulfur (S).