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¦.
coordinate covalent bond. a covalent bond in which one of the bonded atoms furnishes both of the shared electrons. covalent bond. a chemical bond between two atoms or radicals formed by the sharing of a pair (single bond), two pairs (double bond) or three pairs of electrons (triple bond).eptide bond. the âCOâNHâ linkage formed between the carboxyl group of one amino acid and the amino group of another; it is an amide linkage joining amino acids to form peptides. phosphoanhydride bond. a high energy bond present in ATP.