In 1957 the symbol for this gaseous element was changed from a to ar

Below you can find the In 1957 the symbol for this gaseous element was changed from a to ar Jeopardy Words Answer. The answer to In 1957 the symbol for this gaseous element was changed from a to ar has 5 letters. This clue belongs to the Science category and is part of Jeopardy Word Level 1983. If you scroll near the bottom you will find other clues and answers part of level 1983