Among the elements from atomic number 1-92 are stable and generally found in nature.
Those elements that are not known to exist in nature, but have been formed in a human-designed system are known as man-made elements. The chemical elements with atomic number greater than 92 (which is the atomic number of Uranium, ) are man-made elements and are known as transuranium elements. These elements are unstable.
Hence, transuranium elements are man made elements in an anomalous location.
Jill and Susan violated safety procedures by not properly listening and/or reading over the instructions to know all the materials, steps, and equipment they need for the lab. Hope this helps!
