What is the atomic number of a neutral atom that contains 5 electrons and has an atomic mass of 11 amu? A Lithium

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

In 2002, the rare earth elements mine in mountain pass, california was closed because