Russian astronaut breaks record for longest time spent in space. By Nicola Harley. 12:52PM BST 12 Sep 2015. Comments. An astronaut has broken the record for the longest amount of time spent in space becoming the world's most experienced space flier. Russian cosmonaut Gennady Padalka, 57, has spent a record 879 days in space throughout his career as he return from his latest mission from the International Space Station.
  Citric acid is covalent because the formula is C6H8O7 and there are no metals involved. The Ionic style is not as plâ¦. 2  Lemon Juice Acid and its Many Uses When someone mentions lemon juice, the first thing that may come to mind is the sharp, tart taste of lemons. 3  The fruit has long been a key ingredient in refreshing drinks, whâ¦.
Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms. Atoms form covalent bonds in order to reach a more stable state. A given nonmetal atom can form a single, double, or triple bond with another nonmetal. Which type of bond is formed between the atoms depends on their numbers of valence electrons.