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¦.
Unlike ionic bonding, covalent bonding may have single, double bonds or triple bonds between two atoms. These bonds are formed in such a way that the two atoms obey the octet rule. The bond occurs via the overlapping of atomic orbitals. A single bond is formed when two electrons are shared. A double bond is formed when four electrons are shared. Sharing of six electrons may result in a triple bond. The characteristics of compounds with covalent bonds include strong bonding between two atoms due to similar electronegativity values.