What is the atomic weight of barium? What color is iodine? What is the mass number of potassium-39? What is the mass number of oxygen-17? What is the mass number of zinc? How many atoms of iodine are in 2.5 moles of lead iodide?
PBPlumbum(Latin for the metallic element lead) PBPolished Brass PBPackard Bell PBPunkBuster(gaming anti-cheat project) PBPoint-Blank PBPlayboy(magazine) PBPublications PBPaperback(book edition) PBPacific Beach(San Diego, California) PBPersonal Best(athletic record) ...