Symbol (chemistry) the material was known in ancient times, while for others, the name is a more recent invention. For example, "He" is the symbol for helium (New Latin name, not known in ancient Roman times), "Pb" for lead ("plumbum" in Latin), and "Hg" for mercury ("hydrargyrum" in Greek). Some symbols come from other sources, like "W" for tungsten ("Wolfram" in German, not known in Roman times). Temporary symbols assigned to newly or not-yet synthesized elements use 3-letter symbols based on their atomic numbers. For example, "Uno" was the temporary symbol for hassium (element 108) which had the temporary name of "unniloctium".
Otherwise Known as Sheila the Great painting the backdrop of the camp's production of "Peter Pan" (in which Libby plays Captain Hook, to her misery). Sheila believes that her fearless masquerade is effective, but her beliefs are proven false after the guests at her sleepover party write otherwise in a slam book activity. Despite the brawl that ensues between the agitated girls, devastated by the insults written in each other's books, their friendship, nevertheless, continues, and Sheila slowly overcomes her fears (albeit not entirely) little by little. As the summer draws to a close with a barbecue party, she is unshaken at the thought of her