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.
North Korea should not test Donald Trump, Mike Pence warns. 02:17. Mike Pence says the 'era of strategic patience' is over as he visits DMZ after failed North Korea missile. China and Russia dispatch ships to shadow Donald Trumpâs 'armada' as it approaches North Korean waters - Japanese media report. Donald Trump says China is working with the US over North Korea.