HomeLink Parent Portal is available for all MDUSD students and legal guardians. There are a variety of reasons to have a HomeLink Parent Portal account, and some of the benefits include the ability to check student grades (Middle & High Schools only), test scores, attendance, as well as other contact and registration features. 2.
When present in compounds barium exists usually in the Ba 2+ , divalent state. Barium dissolves in most aqueous acids except sulfuric acid, due to the formation of an insoluble protective layer of barium sulfate.
Its atomic number is 56; its atomic mass is 137.36. The acid-soluble salts of barium are poisonous. Barium carbonate, formerly used in medicine, is now used to prepare the cardiac stimulant barium chloride; fine, milky barium sulfate is used as a contrast medium in radiographic imaging of the digestive tract.