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.
Barium is a chemical element and a soft silvery white metallic alkaline earth metal. Its atomic number is 56 and it is denoted by chemical symbol Ba.It was discovered by prominent English chemist and inventor, Sir Humphry Davy, 1st Baronet.He worked with electrolysis and discovered Barium in London in 1808.ts atomic number is 56 and it is denoted by chemical symbol Ba. It was discovered by prominent English chemist and inventor, Sir Humphry Davy, 1st Baronet. He worked with electrolysis and discovered Barium in London in 1808.