Period 6 element the last stable element; all subsequent elements are radioactive. For bismuth, however, its only primordial isotope, Bi, has a half-life of more than 10 years, over a billion times longer than the current age of the universe. As a rule, period 6 elements fill their 6s shells first, then their 4f, 5d, and 6p shells, in that order; however, there are exceptions, such as gold. This period contains the lanthanides, also known as the "rare earths". Many lanthanides are known for their magnetic properties, such as neodymium. Many period 6 transition metals are very valuable, such as gold, however many
Element Girl and joins the mission to the elevated coast of New Themyscira. After the death of Billy Batson, Emily uses her powers to protect the remaining children alongside Cyborg. Emily Sung appears in "DC Bombshells". Like Metamorpho's original powers, Element Girl (and Element Woman) could transform her body into any of the elements naturally found in the human body and shape them at her will. She can change her hair color using metals, and she can create silicate faces that fall off after a while. She uses the faces for ashtrays. She said she once tried to transmutate her body into