An electron source is a bond or a lone pair of electrons. It is either a p bond or a lone pair on an atom of relatively high electron density in a molecule or ion, or a bond that must break during a reaction. An electron sink is an atom on a molecule or ion that can accept a new bond or lone pair of electrons.
What Military Threat Does North Korea Pose? It is impossible to say whether the recent threats from North Korea constitute a clear and immediate danger or whether the strong threats are just bluster in order to extract food aid and technical assistance from the international community.
Thursday 8 October 2015 02.06 EDT Last modified on Friday 11 November 2016 07.41 EST. The US government believes North Korea has the capability to launch a nuclear weapon against the homeland and stands ready to defend against any such attacks, a high-level US military official has said.