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.
Trump says 'we'll see' when asked if US would attack North Korea. North Korea has tested a hydrogen bomb. What you need to know about North Korea's hydrogen bomb. Angela Merkel and Emmanuel Macron condemn North Korea nuclear test. Trump condemns 'hostile and dangerous' North Korea over nuke test.