Six astronauts are still on the space station as part of a planned year-long stay in space, the longest tour of duty in the station's 15-year history.
The molecular formula of citric acid is C 6 H 8 O 7. The chemical formula for citric acid is best shown by a diagram of its complete structural formula. This shows how the atoms are arranged in the molecule. Citric acid has three carboxyl or-COOH groups and is triprotic in nature.
Na is a metal and Cl is a non metal. Ionic bonds are between a metal and a non metal. Therefore, Sodium Chloride (NaCl) is an ionic co â¦ mpound. Mixologistâ¦. 2  The Chemical Structure of Salt Salt is an ionic compound. 3  Its chemical structure includes two elements in their pure form: sodium and chlorine. 4  The chemical name of salt is sodium chloride, and its formulaâ¦. 5  The Periodic Table of Elements Life is sustained by a number of chemical elements.