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A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
Xi Boötis, Latinised from ξ Boötis, is a binary star [9] system located at a distance of 22 light-years away from Earth. It is the nearest visible star in the constellation Boötes . The brighter, primary component of the pair has a visual magnitude of 4.70, making it visible to the naked eye.