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.
Properties of barium. Barium is a soft metal belonging to the alkaline earth metals group. It is silvery-white and oxidizes very easily. Its chemical composition resembles calcium [See Periodic Table of the Elements ]. Barium is generally kept under an oxygen-free liquid such as petroleum. It can be decomposed after exposure to water or air. Naturally occurring barium has seven stable isotopes.