Analyze the reasons for the creation of innumerable spectral lines in the H spectrum

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

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.