Funny Tshirt A smart arrangement of elements of the periodic table makes a funny chemistry joke shirt for any chemistry student, science, chemistry teachers, chemistry nerds Periodic Table organizes the chemical elements according to the number of protons that each has in its atomic nucleus. The Periodic Table of the Elements arranges elements in an informative array, Elements are arranged in order of increasing atomic number Crafted from a unique 40 singles tri-blend fabric, offering a lightweight, ultra-soft feel Classic crew neck design with side-seam construction ensures both comfort and a flattering silhouette Lighter colors are semi-sheer