Edx Student

This page lists questions and answers that were posted by visitors named Edx Student.

Questions

The following questions were asked by visitors named Edx Student.

Answers

The following answers were posted by visitors named Edx Student.

How exactly did you work this out? I managed to get the first 2 right, but I could not work out the basis of the crystal structure. P.S this question is copied word for word in an Edx online course. I do not mind if someone asked HOW to do it, but asking...