Question

go to www.periodictable.com and hover over each of the crystallogens. write down 2 or 3 interesting facts about them:

Explanation:

You need to visit the given website and interact with the Crystallogens to gather interesting facts. Crystallogens are elements with a crystalline structure. By hovering over them on the website, you can access information about their properties, uses, etc.

Answer:

Please visit www.periodictable.com, hover over each Crystallogen and record 2 - 3 interesting facts as per the instruction. No specific facts are provided here as they need to be obtained from the website interaction.