For example, 63 Cu (29 protons and 34 neutrons) has a mass number of 63 and an isotopic mass in its nuclear ground state is 62.91367 u. There are two reasons for the difference between mass number and isotopic mass, known as the mass defect:
The Electra complex is an ambiguous psychiatric concept which attempts to explain the maturation of the human female. It is said to be the female counterpart to the Oedipus complex in males.
(E, pills, doves, MDMA, MDEA, MDA etc.) Also read: A Rough Guide To Ecstasy - all about ecstasy. Ecstasy is a powerful stimulant and mood changer that speeds up your body system and alters your perception of the world. It can make you feel both uplifted and relaxed and feeling very happy, usually with an overwhelming urge to dance.